Question

Pls help I need this answer

Answer 1

B , D , A

Explanation:

(4x³ - 4 + 7x) - (2x³ - x - 8)

distribute the first parenthesis by 1 and the second by - 1

= 4x³ - 4 + 7x - 2x³ + x + 8 ← collect like terms

= 2x³ + 8x + 4 ← equivalent to expression B

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(- 3x² +
`x^(4)` + x) + (2
`x^(4)` - 7 + 4x) ← remove parenthesis

= - 3x² +
`x^(4)` + x + 2
`x^(4)` - 7 + 4x ← collect like terms

= 3
`x^(4)` - 3x² + 5x - 7 ← equivalent to expression D

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(x² - 2x)(2x + 3)

each term in the second factor is multiplied by each term in the first factor, that is

x²(2x + 3) - 2x(2x + 3) ← distribute parenthesis

= 2x³ + 3x² - 4x² - 6x ← collect like terms

= 2x³ - x² - 6x ← equivalent to expression A