Which expression is equivalent to (3x^5+8x^3) - (7x^2-6x^3) ?

Question

Really need help with this algebra problem.

Answer 1

You need to distribute the negative, and combine like terms!

Step 1: Distribute the negative: 3x⁵ + 8x³ – 7x² + 6x³

[You get this by multiplying (7x²–6x³) * -1 = -7x² + 6x³ ]

Step 2: Combine like terms: The only two terms to combine are the x³ terms, so add 8x³ and 6x³ and get

3x⁵+ 14x³ - 7x²

That's it!