MCQ
Subtract the second expression from the first $m^2n - 8 + mn^2$ and $7 - m^2n - mn^2.$
- A$m^n+ 2 mn^2. - 14$
- ✓$2m^2n + 2 mn^2. - 15$
- C$2m^2n + 2n^2 - 14$
- D$2n^2mn + 2 mn^2. - 15$
✓
Answer
Correct option: B.
$2m^2n + 2 mn^2. - 15$
$m^2n - 8 + mn^2. - (7 - m^2n - mn^2.)$
$= m^2n - 8 + mn^2.+ m^2n - 7 + mn^2.$
$= 2m^2n + 2 mn^2.-15$
$= m^2n - 8 + mn^2.+ m^2n - 7 + mn^2.$
$= 2m^2n + 2 mn^2.-15$
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