For the polynomial below, -2 is a zero.
f(x) = x^3 - 2x^2 - 6x + 4
Express f(x) as a product of linear factors.
Thank you for the opportunity to help you with your question!
f(x) = x3 + (2x2 – 4x2 ) - (8x + 2x) + 4
= x3 + 2x2 – 4x2 - 8x + 2x + 4
= (x3 + 2x2 ) – (4x2 - 8x) +
(2x + 4)
= x2(x + 2) – 4x( x + 2) + 2 (x + 2)
= (x + 2)(x2 – 4x + 2)
The answer for this question usually involves radicals if that helps any. That answer isn't correct on mine
factor x2 – 4x + 2 = -(-x + sqrt(2) + 2)(x + sqrt(2) - 2)
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?