Question

Which could be the value of x in the equation x² + 15 = 64?




A: -23
B: -√49
C: 8
D: √79


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Answer 1

Answer:

B) -√49

Step-by-step explanation:

$x^{2} + 15 = 64\\x^{2} = 64 - 15\\x^{2} = 49\\x = \sqrt{49}$

Answer 2

x^2+15=64? your answer is going to be B