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MARGARETHEVE2008IN
Answered

1.
3ab + 40 - 12, when a = 3 and b = -4
2.
5m2 - 3n, when m = 2 and n = 4​

Sagot :

108482120842IN

Answer:

1. -8

2. 8

Step-by-step explanation:

1. 3ab + 40 - 12, when a = 3 and b = -4

Solve using Substitution method

3 (3) (-4) + 40 -12

-36 + 40 - 12

4 - 12

= -8

2. 5m2 - 3n, when m = 2 and n = 4

5 (2)² - 3 (4)

5 × 4 - 12

20 - 12

= 8

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