Question

Find the sum of 4x3 + 2x2 - 4x + 3 and 7x3 -4x2 + 7x + 8.

Answer 1

(7x3+2x2-2)-(4x3+7x+8)

Final result :

3x3 + 2x2 - 7x - 10
Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x3" was replaced by "x^3". 2 more similar replacement(s).

Step by step solution :

Step 1 :

Raise x to the 3rd power
Exponentiaion :

Equation at the end of step 1 :

(((7•(x3))+(2•(x2)))-2)-(((4•x3)+7x)+8)
Step 2 :

Raise x to the 2nd power
Exponentiaion :

Equation at the end of step 2 :

(((7•(x3))+(2•x2))-2)-(4x3+7x+8)
Step 3 :

Raise x to the 3rd power
Exponentiaion :

Equation at the end of step 3 :

(((7 • x3) + 2x2) - 2) - (4x3 + 7x + 8)
Step 4 :

Simplify 7x3+2x2-2 - 4x3+7x+8
Checking for a perfect cube :

4.1 3x3+2x2-7x-10 is not a perfect cube

Trying to factor by pulling out :

4.2 Factoring: 3x3+2x2-7x-10

Answer 2

thats correct