Evaluate the function at the indicated value.
-Find f(x - 1)when f(x)= 4x2 + 3x + 1.
A) $4 x ^ { 2 } - 5 x + 8$
B) $- 5 x ^ { 2 } + 4 x + 2$
C) $4 x ^ { 2 } - 5 x + 2$
D) $4 x ^ { 2 } + 7 x + 8$

Question

Evaluate the function at the indicated value.
-Find f(x - 1)when f(x)= 4x2 + 3x + 1. 
A) $4 x ^ { 2 } - 5 x + 8$
B) $- 5 x ^ { 2 } + 4 x + 2$
C) $4 x ^ { 2 } - 5 x + 2$
D) $4 x ^ { 2 } + 7 x + 8$

Quizplus · Accepted Answer

Substitute x - 1 for x in f(x) and simplify.f(x - 1) = 4(x - 1)^2 + 3(x - 1) + 1= 4(x^2 - 2x + 1) + 3x - 3 + 1= 4x^2 - 8x + 4 + 3x - 2= 4x^2 - 5x + 2

Evaluate the Function at the Indicated Value 4x2−5x+84 x ^ { 2 } - 5 x + 84x2−5x+8

Evaluate the Function at the Indicated Value $4 x ^ { 2 } - 5 x + 8$