Question

if m 2,find the value of 3m²-2m-7​

Answer 1

Explanation:

m = 2

${3m}^{2} - 2m - 7 \\ = 3( {2}^{2} ) - 2(2) - 7 \\ = 3(4) - 4 - 7 \\ = 12 - 11 \\ = 1$

Answer 2

$\huge\bigstar\mathbb\red{solution}\bigstar$

Given ,

$3 {m}^{2} - 2m - 7$

substitute m = 2 ,

$3 \times {2}^{2} - 2 \times 2 - 7 \\ 3 \times 4 - 4 - 7 \\ 12 - 4 - 7 \\ 1.$