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Addition and Subtraction of Algebraic Expression

Subtract. -3...

Question

Subtract.
$- 3 m^{2} - 6 m + 3$ from $5 m^{2} - 9$ .

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Solution

$5 m^{2} - 9 - (- 3 m^{2} - 6 m + 3) 5 m^{2} - 9 + 3 m^{2} + 6 m - 3 8 m^{2} + 6 m - 12$

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