Question
Expand the following$:(m + 8) (m - 7)$
✓
Answer
$(m + 8) (m - 7)$
$= m^2+ 8m - 7m - 56$
$= m^2 + m - 56$
$($Using identify : $(x+ a) (x - b))$
$= x^2 + (a - b) x - ab).$
$= m^2+ 8m - 7m - 56$
$= m^2 + m - 56$
$($Using identify : $(x+ a) (x - b))$
$= x^2 + (a - b) x - ab).$
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