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Nookie1986 [14]
3 years ago
15

What is the the only solution of 2x^2+8x=x^2-16

Mathematics
2 answers:
Greeley [361]3 years ago
5 0
I got -4 as the solution
elena-s [515]3 years ago
3 0
2x² + 8x = x² - 16
2x² - x²+8x + 16 = 0
x²+8x+16 = 0
x² + 2*4x + 4² = 0
(x+4)² = 0
x+4 = 0
x= - 4
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