Question

find the value of k if x+2 is a factor of 2x^3 -8x^2 +8x +5k​

Answer 1

Step-by-step explanation:

x+2

x=-2

2x cube-8x square + 8x+ 5k

2×(-2)cube-8(-2)square+8(-2)+5k

2×(-8)-8(4)+(-16)+5k

-16-32-16+5k

-48-16+5k

-64+5k

-64=5k

-64/5=k

-12.8=k

k=-12.8

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