If a = -2 , b = 2 , c = -5 , find the value of   `a ( a + c + b )`

find the value of   7_(C_2)

If a= 3, b = 2 and c = 5 then find the value of a^2-3b^2+ac

If a=-2, b=-3, c = 2 then find the value of (ab)/(c) + 9 ?

If a = 2 , b = -2 and c = 2 , then find the value of a^2b + b^2c + c^2a

If a=4, b=-3, c=2 , find the value of 4a^(2)+5b-12c ..

If a=2, b=3 and c=5 then find the value of a^3+b^3+c^3

If   ( a -5 )^2 + ( b - c )^2 + ( c - d )^2 + ( b + c + d - 9 )^2 = 0 , then find the value of ( a + b + c ) ( b + c + d ) is

If a = 15, b = 12 and c= 9, find the value of sqrt(((2a+2b)(2c+a))/(2(a-b)(2b+c)))

If a:b = 3 : 2 and b : c = 2 : 5, find a : c.