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Radda [10]
3 years ago
7

Can somebody please help me?

Mathematics
1 answer:
yaroslaw [1]3 years ago
7 0

Lisa did not completely solve the equation. When she was left with x^2 = 9, she should have taken the square root of x and 9 to isolate the variable. She would have gotten x = 3 or x = -3.

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