38.8k views
8 votes
Can somebody please help me with this question!! I will appreciate the help dearly

Can somebody please help me with this question!! I will appreciate the help dearly-example-1
User Reshure
by
8.4k points

1 Answer

2 votes

Answer: -7, 7

Explanation:

-2x^2 - 9 = -107

-2x^2 + 98 = 0 (add 107 to both sides)

-2(x - 49) = 0 (factor out -2)

-2(x - 7)(x + 7) = 0 (factor)

x - 7 = 0

x = 7

x + 7 = 0

x = -7

User Anthony Conklin
by
7.1k points

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