Evaluate 3a2 + 4b2 for a = 2 and b = 3

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

1/4x+5=3/4. i can't get access to the answer to this question! and, my request on "contact us" will not go