7a^(3)+56b^(3)

The value of 2a^(3)-[3a^(3)+4b^(3)-{2a^(3)+(-7a^(3))}5a^(3)-7b^(3)] is (a) -11a^(3)+3b^(3)( b) 7b^(3)+3a^(3)(c)11a^(3)-3b^(3) (d) (11a^(3)+3b^(3))

If   a : b = 7 : 3 , then find ( a^3 - b^3 ) /b^3

If (3a+7b)/(3a-7b)=(4)/(3) then find the value of the ratio (3a^(2)-7b^(2))/(3a^(2)+7b^(2))

Find the following products: 2a^(3)(3a+5b) (ii) -11a(3a+2b)-5a(7a-2b)( iv) -11y^(2)(3y+7)

Factorize the following expressions 7x^3+56y^3

If a, b, c are variables such that 21a + 40b + 56c=0 then the family of lines ax+by+c=0 passes through (A) (7/14, 9/4) (B) (4/7, 3/8) (C) (3/8, 5/7) (D) (2, 3)

If a, b, c are variables such that 21a + 40b + 56c=0 then the family of lines ax+by+c=0 passes through (A) (7/14, 9/4) (B) (4/7, 3/8) (C) (3/8, 5/7) (D) (2, 3)

Expand : (7a + b)(7a-3b)