Question

The sum of 3m2 + 5m – 7 and - 4m
-m2 + 5m + 2
-m2 + 5m - 2
none of these​

Answer 1

${\huge{\underline{\tt{\red{A}\pink{n}\green{s}\orange{w}\blue{e}\red{r}}}}}$

None of these

${\fbox{Explanation}}$

${3m}^{2}+{5m}-{7}+{4m}$

$\longrightarrow$${3m}^{2}+{8m}-{7}$