Answers

  • Brainly User
2015-08-19T13:38:47+05:30

2x3+2=2(x+1)(x2−x+1)

Explanation

Step 1 :
After factoring out 2 we have:
2x3+2=2(x3+1)

Step 2 :

To factor x
3+1 we can use sum of cubes formula:
I
3−I
I
3=(I+II)(I2−I⋅II+II2)

 After putting I=x and II=1 , we have:
x^3+1=(x+1)(x^2−x+1)
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