" 3."9(2a-b)^(2)-4(2a-b)-13

Factorize : 9(2a-b)^2-4(2a-b)-13

If 4(a+2)^(2)-9a+2(2a^(2)-1)=4(b+2)^(2)-9b+2(2b^(2)-1)=15 where a,b in R and a>b then find the value of 8(a-b)

(2a^(3)-b^(3))^(3)-b^(9)

Verify identity (a + b)(a - b) -= a^(2) - b^(2) geometrically by taking a = 13 units, b = 9 units

Find the division of {a^3+8-9b(3b^2-2a)}-:(a^2+9b^2+4-2a+3ab+6b)

Find the product of the following. (a^2+4b^2+2ab-3a+6b+9)(a-2b+3)

If (9x-13)/(x^(2)-2x-15)=(A)/(x+3)+(B)/(x-5) , then A+B is ________.