" 9."9a(3a-5b)-12a^(2)(3a-5b)

Factorise: 9a (3a-5b) - 12 a ^(2) (3a - 5b )

Factorize each of the following algebraic expressions: 6x(2x-y)7y(2x-y)2r(y-x)+s(x-y)7a(2x-3)+3b(2x-3)9a(6a-5b)-12a^(2)(6a-5b)

Find the LCM of the given expressions. -9a^(3)b^(2), 12a^(2)b^(2)c

Show that: :(3x+7)^(2)-84x=(3x-7)^(2)(9a-5b)^(2)+180ab=(9a+5b)^(2)((4m)/(3)-(3n)/(4))^(2)+2mn=(16m^(2))/(9)+(9n^(2))/(16)

Find the number of terms in the expansion of the following : (2a+5b)^(9)-(2a-5b)^(9)

Factorise : 9a^(2) + (1)/(9a^(2)) - 2-12a + (4)/(3a)

Find the product of the following. (9a^2+25b^2+15ab+12a-20b+16)(3a-5b-4)

Show that : (3x+7)^2-84 x=(3x-7)^2 (9a-5b)^2+180 a b=(9a+5b)^2 ((4m)/3-(3n)/4)^2+2m n=(16 m^2)/9+(9n^2)/(16)

Factorise : 3a^(2) b - 12 a^(2) - 9b + 36

Simplify the following : (a + 2c) + (3a + 5b) (c - 2a - 9b)