(7a+b)-6(a+b)^(2)

Find each of the products: (7a b)xx\ (-5a b^2c)xx\ (6a b c^2)

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)

If (15a^(2)+4b^(2))/(15a^(2)-4b^(2))=(47)/(7) then find the values of the following (i) (a)/(b) (ii) (7a-3b)/(7a+3b) (iii) (b^(2)-2a^(2))/(b^(2)+2a^(2))

Add the following expressions: (i) x^3-2x^2y+3x y^2-y^3,\ 2x^3-5x y^2+3x^2y-4y^3 (ii) a^2-2a^3b+3a b^3+4a^2b^2+3b^4,-2a^2-5a b^3+7a^3b-6a^2b^2+b^4

Add the following expressions: (i) x^3-2x^2y+3x y^2-y^3,\ 2x^3-5x y^2+3x^2y-4y^3 (ii) a^2-2a^3b+3a b^3+4a^2b^2+3b^4,-2a^4-5a b^3+7a^3b-6a^2b^2+b^4

Simplify : (7a-6b+5c)^2+(7a+6b-5c)^2

Factorise : 6 + 7b - 3b^(2)