Question

do as directed add 4m-9mn+12n² and 3m²-16n²-5mn
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Answer 1

${\sf{{\pink{AnsweR:}}}}$

$\sf\:4m-9mn+12n^{2}+(3m^{2}-16n^{2}-5mn)$

$\sf⟹\:4m-9mn+12n^{2}+3m^{2}-16n^{2}-5mn$

$\sf⟹\:4m+3m^{2}-9mn-5mn+12n^{2}-16n^{2}$

$\sf⟹\:4m+3m^{2}-14mn-4n^{2}$

• Thnku :)

Answer 2

Answer:

by addition two equations

Step-by-step explanation:

$4m-9mn+12 {n}^{2} + 3 {m}^{2} - 16 {n}^{2} - 5mn \\ 3 {m}^{2} - 4 {n}^{2} - 14mn + 4m$