118k views
0 votes
Let f(x) = x to the second power − 8x + 5. Find f(−1).

1 Answer

1 vote

Hello!

To find the value of f(-1), you need to substitute -1 into each x variable and solve. Remember to use PEMDAS when simplifying.

f(x) = x² - 8x + 5 (substitute -1 for x)

f(-1) = (-1)² - 8(-1) + 5 (simplify the exponent)

f(-1) = 1 - 8(-1) + 5 (multiply)

f(-1) = 1 + 8 + 5 (add alike terms)

f(-1) = 14

Therefore, the value of f(-1) is 14.

User Mmik
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories