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Asked by toni

how do i solve this find the root

3x^2 +21x=0

is the root 7
12 years ago

Answers

Answered by Reiny
factor it

3x(x+7) = 0
so
3x=0 or x+7=0
x = 0 or x = -7
12 years ago
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how do i solve this find the root

3x^2 +21x=0

is the root 7

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