Question

Simplify the expression 3(m+ mn) + 6-mn, and find out its value when m = 3 and n=-6.
2.


Ans=?​

Answer 1

Answer:

3 ( m + mn ) + 6 - mn

$\longrightarrow\sf{ 3m + 3mn + 6 - mn }$

$\longrightarrow\sf{ 3m + 3mn - mn + 6 }$

$\longrightarrow\sf{ 3m + 2mn + 6 }$

putting value of m as 3 and n as -6

$\longrightarrow\sf{ 3\times 3 + 2\times 3\times (-6) + 6 }$

$\longrightarrow\sf{ 9 + 6\times (-6) + 6 }$

$\longrightarrow\sf{ 9 - 36 + 6 }$

$\longrightarrow\sf{ 15 - 36 }$

$\longrightarrow\sf{ 21 }$