Question

If 5 is a zero of x^3+kx^2+2x+8. Find X

Answer 1

Answer:

k = -143/25

Step-by-step explanation:

5³ + k(5)² + 2(5) + 8 = 0

125 + 25k + 10 +8 = 0

143 + 25k = 0

25k = -143

k = -143/ 25

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