This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Maths Chapter 14 Factorisation ā Quiz 6 š Homepage š Download PDF Books š Premium PDF Books Class 8 Maths Chapter 14 Factorisation Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The factorisation of ab-a-b + 1 is A) ( a-1)(b-1). B) (a + 1)(b + 1). C) (a-1)(b + 1). D) (a + 1)(b-1). Show Answer Correct Answer: A) ( a-1)(b-1). 2. $4y^2-12y+9$ A) $4y^2+12y+9$. B) $\left(2y\times3\right)^2$. C) $\left(2y+3\right)^2$. D) None of these. Show Answer Correct Answer: D) None of these. 3. $factorise\\\\\\x^2+8x+16$ A) $\left(x+2\right)^2$. B) $\left(x+3\right)^3$. C) $\left(x+4\right)^3$. D) $\left(x+4\right)^2$. Show Answer Correct Answer: D) $\left(x+4\right)^2$. 4. Factorise $21x-14$ A) $14\left(21x\right)$. B) $7\left(3x-2\right)$. C) $14\left(21x-1\right)$. D) $7\left(3x-14\right)$. Show Answer Correct Answer: B) $7\left(3x-2\right)$. 5. The factorisation of 12a$^{2}$b+15ab$^{2}$ gives: A) 3a(4a+5b). B) Heb (4 A+Khab). C) ZB (Cha + 5b). D) Heb (4 August+Kh). Show Answer Correct Answer: B) Heb (4 A+Khab). 6. Factor:3x$^{2 }$-17x + 10 A) (x-5)(3x-2). B) (x + 5)(3x + 2). C) (3x-5)(x-2). D) (x + 5)(3x-2). Show Answer Correct Answer: A) (x-5)(3x-2). 7. Factorise 3r$^{2}$ + 9 A) R$^{2}$ (3 + r). B) Ar (p + t). C) Ar ($^{a} $ + p). D) 3 (r$^{2}$ + 3). Show Answer Correct Answer: D) 3 (r$^{2}$ + 3). 8. Factork$^{2}$+7x+10 A) (K+2) (K+5). B) (K-2) (K-5). C) (K+10) (K+4). D) (K+2) (K-5). Show Answer Correct Answer: A) (K+2) (K+5). 9. Fill in the blank:2(x + 7) = 2x + ..... A) 7. B) 14. C) Sd. D) 14x. Show Answer Correct Answer: B) 14. 10. Factor:17xy-x A) 17(xy-x). B) Y(17x-x). C) X(17y-1). D) X(17y). Show Answer Correct Answer: C) X(17y-1). 11. 28-Love $^{a} $ A) 7(4-b$^{2}$). B) 7(2-b)(2 + b). C) 7(2-b)$^{2}$. D) 7(2 + b)$^{2}$. Show Answer Correct Answer: B) 7(2-b)(2 + b). 12. Factorise $35y+7$ A) $5\left(7y+1\right)$. B) $5\left(7y+7\right)$. C) $7\left(5y\right)$. D) $7\left(5y+1\right)$. Show Answer Correct Answer: D) $7\left(5y+1\right)$. 13. On dividing:p(4p$^{2}$-16) by 4p(p-2), we get A) 2p-4. B) P + 2. C) P-2. D) 2p + 4. Show Answer Correct Answer: B) P + 2. 14. Factorise 3r + r$^{2}$ A) R (3 + r). B) Ar (1 + t). C) 3 (1 + r). D) Ar (R + P). Show Answer Correct Answer: A) R (3 + r). 15. Factorise $m^4-256$ A) $\left(m^2+16\right)\left(m^2-16\right)$. B) $\left(m+4\right)\left(m-4\right)$. C) $\left(m^2+4\right)\left(m^2-4\right)$. D) $\left(m-4\right)\left(m+4\right)\left(m^2+16\right)$. Show Answer Correct Answer: D) $\left(m-4\right)\left(m+4\right)\left(m^2+16\right)$. 16. Expand $2x\left(x-3y\right)$ A) $ X^Reflecting $. B) $3x-6xy$. C) $2x^2-6xy$. D) $ 3x-6y $. Show Answer Correct Answer: C) $2x^2-6xy$. 17. The factorisation of 5x-20 is: A) 5(x-5). B) 5(x-20). C) 5(x-4). D) 5(x-3). Show Answer Correct Answer: C) 5(x-4). 18. (x + 1) (x + 1) is a factor of ..... A) X$^{2}$ + 2x + 1. B) X$^{2}$-2x + 1. C) X$^{2}$-1 + 2x. D) X$^{2}$ + 1-2x. Show Answer Correct Answer: A) X$^{2}$ + 2x + 1. 19. Factor2x$^{2}$-13x-70 A) (2x-7)(x+10). B) (7x+5) (x+2). C) (2x+7)(x-10). D) 2(x+7)(x+10). Show Answer Correct Answer: C) (2x+7)(x-10). 20. The common factor of 2x, 3x3, 4 is A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: B) 1. 21. $\left(a+2b\right)^2-\left(a^2-b^2\right)$ A) $ ZB^2 $. B) $5b^2+4ab$. C) $ Boy^A+August $. D) $ A ^ 2 + 4b ^ 2 $. Show Answer Correct Answer: B) $5b^2+4ab$. 22. Factorise $5k+25$ A) $5\left(5k+25\right)$. B) $5\left(k+25\right)$. C) $5\left(k+5\right)$. D) $5\left(5k+5\right)$. Show Answer Correct Answer: C) $5\left(k+5\right)$. 23. Factor:56a$^{3}$-8a A) 8a$^{2}$(56a$^{3}$-8a). B) Za (H $^{a} $-1). C) Za (H $^{p} $ A). D) 8a$^{2}$(35a$^{2}$-a). Show Answer Correct Answer: B) Za (H $^{a} $-1). 24. Factorise 4x$^{2 }$-25 A) ( 2x + 5 ) ( 2x-5 ). B) (2x-5 ) ( 2x-5 ). C) ( 2x + 5 ) ( x + 5 ). D) Prime. Show Answer Correct Answer: A) ( 2x + 5 ) ( 2x-5 ). 25. Factorise $a^2+3a$ A) $a\left(1+3\right)$. B) $a\left(2a+3\right)$. C) $a\left(a+3\right)$. D) $a\left(a+3a\right)$. 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