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Ede4ka [16]
3 years ago
7

What number must you add to complete the square? x^2 + 8x = -3

Mathematics
1 answer:
KonstantinChe [14]3 years ago
5 0
<span>x^2 + 8x = -3
</span><span>x^2 + 8x + 16 = -3 + 16
using a^2 + 2 a b + b^2 = (a+b)^2
</span><span>
</span>x^2 + 8x + 16 = 13

<span>(x +4)^2 = 13

answer : 16 is the number </span><span>you must add to complete the square</span>
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