Question

3m²-12mn+4n²,If m= 2 and n = 1, then find the value of given polynomial.

Answer 1

Hey there!

$Given,\\m=2,n=1\\\\3m^2-12mn+4n^2\\=3\times 2^2 - 12 \times 2\times 1+ 4\times 1^2\\=12 - 24 + 4\\=\boxed{\boxed{\bold{-8}}}$

Hope It Helps You!

Answer 2

Hey !

Given

m = 2 and n = 1

$3 {m}^{2} - 12mn + 4 {n}^{2} \\ \\ 3(2) {}^{2} - 12 \times 2 \times 1 + 4(1)2 \\ \\ 12 - 24 + 4 \\ \\ - 8$

Hope it helps