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ikadub [295]
4 years ago
8

Solve x2 + 10x = -21.

Mathematics
1 answer:
Arisa [49]4 years ago
8 0
Answer is x = -7 and x = -3

<span> x2 + 10x = -21
</span><span> x2 + 10x + 21 = 0
</span>(x +3) (x +7) = 0

(x +3) = 0
and
(x + 7) = 0
so x = - 3 and x = -7
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