SOLUTION: Please help me solve this question: if x-2 and x-1 are factors of the expression; lx^3+2kx^2+24, find the values of l and k.

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Question 1123993: Please help me solve this question: if x-2 and x-1 are factors of the expression; lx^3+2kx^2+24, find the values of l and k.
Answer by greenestamps(13195) About Me  (Show Source):
You can put this solution on YOUR website!


If x-1 and x-2 are factors of the expression, then the expression evaluated at x=1 and at x=2 is equal to 0. That gives you two linear equations in l and k that you can solve to find the values of l and k.

x=1: l+2k+24 = 0
x=2: 8l+8k+24 = 0

Solve....