Question

Add. (x3−2x2+4)+(2x3+x2−2)

Answer 1

Hey there! :) 

(x³ - 2x² + 4) + (2x³ + x² - 2)

To simplify this, let's first get rid of all the parenthesis.

Please remember that : a positive times a negative is a negative, and a negative times a negative is a positive! :)

So, using the above knowledge, let's get to simplifying!

x³ - 2x² + 4 + 2x³ + x² - 2

Now, let's look at our variables/numbers. Note that we have some like terms in here. So, let's add like terms!

(x³ + 2x³) + (-2x² + x²) + (4 - 2)

Simplify.

3x³ + (-x²) + (2)

Now, get rid of our parenthesis [read above about multiplying positives/negatives if you are confused about what is about to happen].

3x³ - x² + 2

~Hope I helped!~

Answer 2

We combine like terms to get 3x³ - x² + 2.
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Hope this helps!
==jding713==