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

Solution:

The two given equations are

4x³ + 2x² - 4x + 3 and 7x³ - 4x² + 7x + 8

We have to find the sum of both

= 4x³ + 2x² - 4x + 3 + 7x³ - 4x² + 7x + 8

By rearranging the terms

= 4x³ + 7x³ + 2x² - 4x² - 4x + 7x + 3 + 8

So we get

= 11x³ - 2x² + 3x + 11

Therefore, the sum is 11x³ - 2x² + 3x + 11.

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

Summary:

The sum of 4x³ + 2x² - 4x + 3 and 7x³ - 4x² + 7x + 8 is 11x³ - 2x² + 3x + 11.