Question

Add.

(3+x³ +3x²) + (2x³ − 2 − 4x²)

Express the answer in standard form. (Please and thank you <3)

Answer 1

3x^3 - x^2 +1

Explanation:

x^3 + 2x^3 = 3x^3

3x^2 + (-4x^2) = -1x^2

3 + (-2) = 1

Answer 2

3x³ - x² + 1

Explanation:

(3 + x³ + 3x²) + (2x³ - 2 - 4x²) ← remove parenthesis

= 3 + x³ + 3x² + 2x³ - 2 - 4x² ← collect like terms

= (x³ + 2x³) + (3x² - 4x²) + (3 - 2)

= 3x³ + (- x²) + 1

= 3x³ - x² + 1 ← in standard form