f(x) = 4(x-1)²-9
f(0) = 4(0-1)²-9
f(0) = 4×(-1)²-9
f(0) = 4Ă—1-9
f(0) = 4-9
f() = -5
f(7) = 4(7-1)²-9
f(7) = 4×6²-9
f(7) = 4Ă—36-9
f(7) = 144-9
f(7) = 135
f(4x²) = 4(4x²-1)²-9
f(4x²) = 4(16x^(4)-8x²+1)-9
f(4x²) = 64x^(4)-32x²+4-9
f(4x²) = 64x^(4)-32x²-5