Problem

$-$ $-$
$21$ $5x^{2}$ $+17xy-12y^{2}$

10th-13th grade

Other

Solution

Qanda teacher - Sandeep Ya

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(12x2 $+$ $7xy-$ $12y^{2}\right)$ by $\left(3x+$ $+4y\right)$

7th-9th grade

Algebra