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In Mathematics / Middle School | 2014-04-22

What are the solutions to the equation [tex]x^2 + 6 = 87[/tex]?

A. -9 and 9
B. -10 and 10
C. -6 and 6
D. The equation has no solutions.

Asked by mjchey

Answer (2)

x 2 + 6 = 87 ∣ − 87 x 2 + 6 − 87 = 0 x 2 − 81 = 0 ( x + 9 ) ( x − 9 ) = 0 x + 9 = 0 ∨ x − 9 = 0 x = − 9 ∨ x = 9 A n s w er : A . ) − 9 an d 9
a 2 − b 2 = ( a − b ) ( a + b )

Answered by Lilith | 2024-06-10

The solutions to the equation x 2 + 6 = 87 are − 9 and 9 . The correct answer is A. -9 and 9.
;

Answered by Lilith | 2025-01-30

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