Question

15) Find the value of k if (x + 2) is a factor of 2x3 + kx² + x - 10.
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Answer 1

Answer:

first we will multiply k to x+2 = Kx+2k

Answer 2

Answer:

k = 7

Step-by-step explanation:

x+2=0

x = -2

put the value of -2 at the place of x, we will get the equation

-28 + 4k = 0

4k = 28

k = 28/4

k = 7