Question

factorise:- 2x²–4x+720=0 ​

Answer 1

Answer:

0=-2x2-4x-720

Two solutions were found :

x =(-2-√-1436)/2=-1-i√ 359 = -1.0000-18.9473i

x =(-2+√-1436)/2=-1+i√ 359 = -1.0000+18.9473i

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

0-(-2*x^2-4*x-720)=0

Step by step solution :

Step 1 :

Equation at the end of step 1 :

0 - (((0 - 2x2) - 4x) - 720) = 0

Step 2 :

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

2x2 + 4x + 720 = 2 • (x2 + 2x + 360)