Find the possible value or values of r in the quadratic equation r2 – 7r

asked Jan 11, 2023 50.8k views

1 vote

Find the possible value or values of r in the quadratic equation r2 – 7r – 8 = 0.

4.3k points

Please log in or register to add a comment.

3 votes

Answer:

-1 and 8

Explanation:

-8 · 1 = -8

-8 + 1 = -7

(r - 8)(r + 1) = 0

r -8 = 0

r = 8

r+1 = 0

r = -1

Tetri answered Jan 15, 2023

by Tetri

4.6k points

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

4.4m questions

5.6m answers