Question

Add: 5x³-4x²+3 and 3x³+7x²-9.

Answer 1

8x³ + 3x² - 6

Explanation:

to add the two expressions, that is

5x³ - 4x² + 3 + 3x³ + 7x² - 9 ← collect like terms

= (5x³ + 3x³) + (- 4x² + 7x² ) + (3 - 9)

= 8x³ + 3x² - 6