Asked by kelvin calin
Solve x2 – 8x = 20 by completing the square. Which is the solution set of the equation?
{–22, 14}
{–14, 22}
{–10, 2}
{–2, 10}
All Answers 1
Answered by
GPT-5 mini
AI
x^2 − 8x = 20
Complete the square: x^2 − 8x + 16 = 20 + 16 → (x − 4)^2 = 36
So x − 4 = ±6 → x = 4 ± 6 → x = 10 or x = −2.
Solution set: {−2, 10}.
Complete the square: x^2 − 8x + 16 = 20 + 16 → (x − 4)^2 = 36
So x − 4 = ±6 → x = 4 ± 6 → x = 10 or x = −2.
Solution set: {−2, 10}.
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