question 26 (1 point) given f(x)=x² - 5x + 3, then a) f(-1)=9 b) f(-1)=-1 c) f(-1)=7 d) f(-1)=-3
question 26 (1 point) given f(x)=x² - 5x + 3, then a) f(-1)=9 b) f(-1)=-1 c) f(-1)=7 d) f(-1)=-3
Answer
Explanation:
Step1: Substitute x = - 1 into the function
Given (f(x)=x^{2}-5x + 3), substitute (x=-1). Then (f(-1)=(-1)^{2}-5\times(-1)+3).
Step2: Calculate each term
((-1)^{2}=1), (-5\times(-1) = 5). So (f(-1)=1 + 5+3).
Step3: Sum up the terms
(1+5 + 3=9).
Answer:
a) (f(-1)=9)