Question

Given the function f(x)=x^2+2x+1, find:

f(−7)

Answer 1

Ans: 36

f(-7)=(-7)^2+2(-7)+1

49-14+1

35+1

36

Answer 2

36

Explanation:

f(x)=x^2+2x+1

Let x = -7

f(-7)=(-7)^2+2*-7+1

= 49-14+1

= 36