Solve 8th question fast
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6x3+11x2−12x−5
6x2+17x+5
1,5
Substitute 1 into x. Since the result is 0, x-1 is a factor.
6\times {1}^{3}+11\times {1}^{2}-12\times 1-5
= 06×13+11×12−12×1−5=0
x−1
Divide 6{x}^{3}+11{x}^{2}-12x-56x3+11x2−12x−5 by x-1x−1
6x^26x2 17x17x 55 x-1x−1 6x^36x3 11x^211x2 -12x−12x -5−5 6x^36x3 -6x^2−6x2 17x^217x2 -12x−12x -5−5 17x^217x2 -17x−17x 5x5x -5−5 5x5x -5−5
6x2+17x+5
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