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hodyreva [135]
3 years ago
8

Solve x2 + 12x = –20 by completing the square. Add to both sides of the equation. The value of in this equation is . Write the l

eft side of the equation as a binomial squared. The left side of the equation becomes ()2. Use the square root property of equality. Isolate the variable: x =
Mathematics
2 answers:
Luden [163]3 years ago
4 0
X^2 +12x = -20
<span>take the coefficient of X
divide it by 2
square that number
then add it to both sides of the equation.
12 / 2 = 6
6^2 = 36
</span>
x^2 +12x +36 = 16
(X+6) * (X+6) = 4*4
X+6 = 4            X= -2
X+6 = -4          X= -10
Andrei [34K]3 years ago
3 0
X2+12x=-20 /-12x
x2=-20-12x /÷2 from the x2
x=-10-6x
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Pythagorean theorem and its converse <br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%20%20%7B5%7D%5E%7B2%7D%
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lukranit [14]

If <em>p</em> is true and <em>q</em> is false, then

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