Question

If m=(-2) find the value of a.3m-5 b.3msquare -2 -7​

Answer 1

Step-by-step explanation:

m=-2

a)3m-5

3(-2)-5

-7-5=-12

b)3m^2-2-7

3(-2)^-9

3×4-9

12-9=3

Answer 2

SOLUTION :

Given that,

m = -2

i) 3m - 5

Putting the value of "m" we get,

3(-2) - 5

-6 - 5

-11

ii)

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

$3 {( - 2)}^{2} - 9$

$3 \times 4 - 9$

$12 - 9$

$3$

Hence we got the answer.