Asked by B
factor 2x^4+12x^3-18x^2-108x
Answers
Answered by
Steve
2x^4+12x^3-18x^2-108x
2x(x^3+6x^2-9x-54)
Now use grouping
2x(x^2(x+6)-9(x+6))
2x(x^2-9)(x+6)
2x(x-3)(x+3)(x+6)
2x(x^3+6x^2-9x-54)
Now use grouping
2x(x^2(x+6)-9(x+6))
2x(x^2-9)(x+6)
2x(x-3)(x+3)(x+6)
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