find 2(-4) ^2 - 2(2) ^4 + 3^2 - -4^2 + 2^4

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42