9th Mathematics Chapter5 Factorization

Sr #	Questions	A	B	C	D
1	Which expression is equivalent to $a^{2} - 4$ ?	( � + 2 ) ( � − 2 ) (a+2)(a−2)	( � − 2 ) 2 (a−2) 2	� 2 + 2 2 a 2 +2 2	(a+4)(a−1)
2	Factorize $9 m^{2} + 12 mn + 4 n^{2}$ .	( 3 � + 2 � ) 2 (3m+2n) 2	(3m−2n) 2	(3m+2n)(3m−2n)	9(m+2n)(m+2n)
3	Which expression is equivalent to $a^{2} - 5 a + 6$ ?	( � − 2 ) ( � − 3 ) (a−2)(a−3)	(a+2)(a+3)	( � − 6 ) ( � + 1 ) (a−6)(a+1)	( � − 5 ) ( � − 1 ) (a−5)(a−1)
4	Factorize $4 x^{2} - 12 x + 9$ .	(2x−3) 2	(2x−3)(2x+3)	4(x−3)(x+1)	( 2 � + 3 ) 2 (2x+3) 2
5	What is the factorization of $25 x^{2} - 16$ ?	( 5 � − 4 ) ( 5 � + 4 ) (5x−4)(5x+4)	(5x+4)(5x−4)	25 ( � − 2 ) ( � + 2 ) 25(x−2)(x+2)	9(3x−2)(3x+2)
6	Factorize $25 a^{2} - 10 ab + b^{2}$	( 5 � − � ) 2 (5a−b) 2	( 5 � + � ) 2 (5a+b) 2	(5a−b)(5a+b)	25(a−b)(a+b)
7	Factorize the expression $9 a^{2} - 16 b^{2}$	(3a+4b)(3a−4b)	( 3 � − 4 � ) ( 3 � + 4 � ) (3a−4b)(3a+4b)	9 ( � − 2 � ) ( � + 2 � ) 9(a−2b)(a+2b)	(3a−2b)(3a+2b)
8	Factorize $x^{2} - 10 x + 25$ .	( � − 5 ) 2 (x−5) 2	(x−5)(x+5)	x 2 −5	( � − 2 ) 2 (x−2) 2
9	What is the factorization of $9 m^{2} - 4 n^{2}$ ?	(3m+2n)(3m−2n)	(3m−2n)(3m+2n)	9 ( � + 2 � ) ( � − 2 � ) 9(m+2n)(m−2n)	(2m−n)(2m+n)
10	Factorize $x^{2} + 2 x y + y^{2}$	(x+y) 2	(x−y) 2	( � + � ) ( � − � ) (x+y)(x−y)	x 2 +y 2
11	If $a^{2} - b^{2} = (a + b) (a - b)$ , what is the factorization of $x^{2} - 9$ ?	( � + 3 ) ( � − 3 ) (x+3)(x−3)	(x+3) 2	x 2 +9	(x−9)(x+1)
12	Factorize $4 x^{2} + 12 x y + 9 y^{2}$	( 2 � + 3 � ) 2 (2x+3y) 2	(2x−3y) 2	( 2 � + 3 � ) ( 2 � − 3 � ) (2x+3y)(2x−3y)	4(x+3y)(x+3y)