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Solve x2 - 49 = 0 A) ±49 B) ±12 C) ±7 D) ±6
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4 votes
Solve
x2 - 49 = 0

A) ±49
B) ±12
C) ±7
D) ±6

User Ashkan Rahmani
by
8.6k points

2 Answers

5 votes
C, x = +-7. Difference of squares
User Sum NL
by
7.6k points
1 vote
x2 - 49 = 0 factor this:0
(x + 7)(x - 7) = 0

x = +/- 7
User Rhynden
by
7.6k points
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