Question

Subtract: 6a3 - 2a2 + 4 from 5a3 - 4a + 7

Answer 1

subtract like terms

5a^3 - 6a^3 = -a^3

7 - 4 = 3

answer is -a^3 + 2a^2 - 4a + 3

Answer 2

`-1a^3+2a^2-4a+3`

Explanation:

Subtract:
`6a^3 - 2a^2 + 4` from
`5a^3 - 4a + 7`

`(5a^3-4a+7)-(6a^3-2a^2+4)`

To subtract multiply the negative sign inside the parenthesis and combine like terms

`5a^3-4a+7-6a^3+2a^2-4`

Combine the like terms

`5a^3-6a^3= -1a^3`, 7-4=3

No like terms for -2a^2 and 4a. so it remains the same

`5a^3-4a+7-6a^3+2a^2-4`

`-1a^3+2a^2-4a+3`