Question

x²+7x-10=0 quadratic equation by completing square
help me:(

Answer 1

Answer:

x=2 or x= -5

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Answer 2

Answer:

x²+7x-10=0

(x + 3.5)² - 3.5² - 10 = 0

(x + 3.5)² - 3.5² - 10 = 0

(x + 3.5)² - 22.25 = 0

(x + 3.5)² = 22.25

x + 3.5 = $\sqrt{22.25}$

x = ± $\sqrt{22.25}$ - 2.5

x = 2.22 or x = -7.22

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