math

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mashra mashra
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math

Complete the square as an aid in graphing: 𝑦 + 8𝑥 = −𝑥^2 − 13
Proof Proof
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Re: math

y + 8x = -x² - 13
y = -x² - 8x - 13
-x² - 8x - 13 = 0
x² + 8x + 13 = 0   ← divided by -1

x² + 8x = -13   ← subtracted 13
x² + 8x + 16 = -13 + 16   ← took half of 8, squared, and added to each side
(x + 4)² = 3   ← factored left side
x + 4 = ±√3   ← took square root of each side
x = -4 ± √3   ← subtracted 4

- Proof