Question

what is the value of the expression 5mn²+3m³n-7m if m=-2 and n = 1?​

Answer 1

Answer:

SOLUTION: 5mn² + 3m³n - 7m; m = -2 , n = 1. 5mn² + 3m³n - 7m; 5(-2)(1)² + 3(-2)³(1) - 7(-2); 5 (-2)(1) + 3(-8)(1) - 7(-2); 5(-2) + 3(-8) + 14; -10 - 24 + ...

Answer 2

Answer:

Ans is 20

Step-by-step explanation:

$5mn ^{2} + 3m ^{3} - 7m \\ 5 \times 2 \times 1 ^{2} + 3 \times 2 ^{2} \times 1 - 7 \times 2 \\ 10 + 24 - 14 \\ 34 - 14 = 20$