Factor: 3x^3-4x^2-15z+20
I used mathway found out it is (3x-4)(x^2-5)
But I am not sure how they did it...
I only got to x(3x+5)(x-3)+20
Your help is greatly appreciated!!
3 answers
Sorry the equation had a typo, it should be 3x^3-4x^2-15x+20
3x^3-4x^2-15x+20
factor by grouping.
x^2(3x-4) - 5(3x-4)
(x^2-5)(3x-4)
factor by grouping.
x^2(3x-4) - 5(3x-4)
(x^2-5)(3x-4)
👍 👍 I see it now.. 😆
Thank you so much oobleck :）
Thank you so much oobleck :）
3 answers