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Gelneren [198K]
3 years ago
6

What is the variable "x" in the equation, 7/2=x/2, and why?

Mathematics
1 answer:
love history [14]3 years ago
7 0
X is equal to 7. Since you are trying to make them equal to each other, the denominator is already the same, so you just need to make the numerator the same too.
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Use completing the square to solve for x in the equation (x minus 12) (x + 4) = 9. x = –1 or 15 x = 1 or 7 x = 4 plus-or-minus S
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Answer:

x = 4 ± \sqrt{73}

Step-by-step explanation:

Given

(x - 12)(x + 4) = 9 ← expand the left side using FOIL

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add ( half the coefficient of the x- term )² to both sides

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x = 4 ± \sqrt{73}

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