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3 years ago

X^(2) + 10x=24 by completeing the square

1 answer:

4 0

(b/2)^2=(−5)^2
x^2−10x+(−5)^2=24+(−5)^2
x^2−10x+25=49
(x−5)^2=49 (square root)
(x−5)=±7

x-5=7 => x=12
x-5=-7 => x=-2

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