Question

f s(x) = x – 7 and t(x) = 4x2 – x + 3, which expression is equivalent to (t x s)

Answer 1

hello : 
s(x) = x – 7 and t(x) = 4x² – x + 3
 (t x s)(x)= (x-7)(4x²-x+3) = 4x^3-x²+3x-28x²+7x-21
 (t x s)(x)= 4x^3 -29x²+10x -21