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Makovka662 [10]

3 years ago

14

3m2+7=55 answer please

1 answer:

kenny6666 [7]3 years ago

6 0

$3m^2+7=55\ \ \ |-7\\\\3m^2=48\ \ \ |:3\\\\m^2=16\to m=\pm\sqrt{16}\\\\m=-4\ \vee\ m=4$

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