Question

Find out the value of c if the expression m3+ 2m2- 4m – c is equal to 8 for m= -2.
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Answer 1

Answer:

value of c is 0

Step-by-step explanation:

Given, m = -2

Now,

m³ + 2m² - 4m - c = 8

(-2)³ + 2(-2)²- 4(-2) - c = 8

(-8) + 8 + 8 - c = 8

8 - c = 8

c = 8 - 8 = 0