Mathematics: Describe the steps you would use to factor 2x ^ 3 + 5x ^ 2 - 8x - 20 completely then state the factored form. this isn t multiple choice btw

4/9 and 5/6 because both 9 and 6 are factors of 18...

Describe the steps you would use to factor 2x ^

nevaehbell30

01.06.2020

2·x^3 + 5·x^2 - 8·x - 20 = 0

You see that the term will be 0 for x = 2

(2·x^3 + 5·x^2 - 8·x - 20) / (x - 2) = 2·x^2 + 9·x + 10 = 0

You can use the abc-formula to solve the quadratic equation.

x = -2.5 ∨ x = -2

So the factored form will be

2·x^3 + 5·x^2 - 8·x - 20 = 2·(x - 2)·(x + 2)·(x + 2.5)

0,0(0 оценок)