What are three ways to prove triangles are similar?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Consider the polynomials given below. p(x) = x4 + 3x3 + 2x2 – x + 2 q(x) = (x3 + 2x2 + 3)(x2 – 2) determine the operation that results in the simplified expression below. 35 + x4 – 573 - 3x2 + x - 8 a. p+q b. pq c.q-p d. p-q

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52