Asked by Leila
I'm struggling with factoring these two questions.
36x^4 - 3x^3 - 18x^2
9x^2 + 3xy - 2y^2
36x^4 - 3x^3 - 18x^2
9x^2 + 3xy - 2y^2
Answers
Answered by
Steve
36x^4 - 3x^3 - 18x^2
3x^2 (12x^2-x-6)
3x^2 (4x-3)(3x+2)
9x^2 + 3xy - 2y^2
(9x+)(x-) won't work; the 9 is too big
3*2 - 3*1 = 3, so
(3x+2)(3x-1)
3x^2 (12x^2-x-6)
3x^2 (4x-3)(3x+2)
9x^2 + 3xy - 2y^2
(9x+)(x-) won't work; the 9 is too big
3*2 - 3*1 = 3, so
(3x+2)(3x-1)
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