Question

Find k if the polynomial given below leaves a remainder 7 when divided by x-2

2xcube + 3xsquare - kx + 5

Answer 1

Answer:

k is 13

Step-by-step explanation:

x - 2= x = 2

substitute 2 in place of x

2(2*2*2) + 3(2*2) - 2k + 5

2*8+3*4 - 2k + 5=7

16 + 12 -2k +5 = 7

33 -2k = 7

33 -7= 2k

26 = 2k

26/2 = k

13 = k

therefore answer is 13 .

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