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3 years ago

8

X^2-5x-24=0 use the quadratic formula to find x

1 answer:

gogolik [260]3 years ago

7 0

<span>x^2-5x-24=0
x=<span><span><span>−b</span>±<span><span>b2</span>−<span><span>4a</span>c</span></span></span><span>2a</span></span></span><span>x=<span><span><span>−<span>(<span>−5</span>)</span></span>±<span><span><span>(<span>−5</span>)</span>2</span>−<span><span>4<span>(1)</span></span><span>(<span>−24</span>)</span></span></span></span><span>2<span>(1)</span></span></span></span><span>x=<span><span>5±121</span>2

</span></span><span><span>x=<span><span>8 <span>or </span></span>x</span></span>=<span>−3

<span><span>
</span></span></span></span>

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