SOLUTION: x^4+3x^3-8x-24=0

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Question 441831: x^4+3x^3-8x-24=0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E4%2B3x%5E3-8x-24=0.....group
%28x%5E4%2B3x%5E3%29-%288x%2B24%29=0
%28x%5E3%28x%2B3%29%29-8%28x%2B3%29=0
%28x%5E3-8%29%28x%2B3%29=0
%28x%5E3-2%5E3%29%2A%28x%2B3%29=0......factor %28x%5E3-2%5E3%29.........

x%5E3-2%5E3=%28x-2%29%28x%5E2+%2B+2x+%2B+4%29

%28x-2%29%28x%5E2+%2B+2x+%2B+4%29%28x%2B3%29=0