Question
Simplify:
$6a^2 + (2a^2 − a^2) − (a^2 − b^2)$
$6a^2 + (2a^2 − a^2) − (a^2 − b^2)$
✓
Answer
$6a^2 + (2a^2 − a^2) − (a^2 − b^2)$
$= 6a^2+ a^2− a^2 + b^2$
$= 6a^2 + b^2$
$= 6a^2+ a^2− a^2 + b^2$
$= 6a^2 + b^2$
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