Question

Help me :( it's algebra and I am so confused. (explanation would be nice)

Answer 1

Answer:

-3x^4-3x+15x^2

Hope it helps

The 1st option

Answer 2

Answer:

- 3$x^{4}$ + 15x² - 3x

Step-by-step explanation:

Given

(5$x^{4}$ - 3x + 8x²) - (8$x^{4}$ - 7x²)

Remove the parenthesis on first and distribute second by - 1

= 5$x^{4}$ - 3x + 8x² - 8$x^{4}$ + 7x² ← collect like terms

= - 3$x^{4}$ + 15x² - 3x ← in standard form