99.8k views
4 votes
X²- 49=0

what is the answer is for my exam? Thanks to the one who helps me has 10 points​

User Dan Def
by
7.6k points

2 Answers

0 votes
Factor the expression
(x - 7)(x + 7) = 0
Zero product property
Solution: x = 7, x = -7
User Actual
by
8.4k points
0 votes

Explanation:

x² - 49 = 0

or, x² - (7²) = 0

or, ( x + 7 ) ( x - 7 ) = 0

hope this answer will help you.

User James Bruckner
by
7.9k points