Which of the following are solutions to the quadratic equation? Check all that apply. x² + 10x + 25 = 7 A. 5 B. -5 C. √7-5 D. -√7-5 E. √7 +5 F. √7

Danihodovic asked Aug 21, 2023

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Which of the following are solutions to the quadratic equation? Check all that apply. x² + 10x + 25 = 7

A. 5
B. -5
C. √7-5
D. -√7-5
E. √7 +5
F. √7

Danihodovic asked Aug 21, 2023

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18 votes

Answer: C, D

Explanation:

$x^2 +10x+18=0\\\\x=(-10 \pm √(10^2 - 4(1)(18)))/(2)\\\\x=(-10 \pm √(28))/(2)\\\\x=-5 \pm √(7)$

Freento answered Aug 28, 2023

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