Simplify:
−2(x² − y² + xy) −3(x² + y² − xy)

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Solution

−2(x² − y² + xy) −3(x² + y² − xy)
Here a '−' sign precedes both the parenthesis. So, we will remove them and change the sign of each term within the two parenthesis.
= −2x² +2y² − 2xy −3x² − 3y² + 3xy
= (−2 − 3)x² +(2 − 3)y² + (− 2 + 3)xy
= −5x² − y² + xy

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