how do you factor this?

7x^3 + 7x^2 - 84

3x ^2 - x + 3x

2007-10-18 15:07:36 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

7x^3 + 7x^2 - 84 = 7(x^3+x^2-12) = 7(x-3)(x^2+4)

3x ^2 - x + 3x = x(3x-1+3) = x(3x+2)

2007-10-22 14:46:58 · answer #1 · answered by georgina 6 · 0⤊ 0⤋

7(x^3+x^2-12)
7(x-3)(x^2+4)

x(3x-1+3)
x(3x+2)

2007-10-18 22:14:12 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

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