Question

Subtract:-5x^2-7y^3+14z from 2x^2-y^3+5z

Answer 1

-3x^2 + 6y^3 - 9z

Explanation:

(2x^2 - y^3 + 5z) - (5x^2 - 7y^3 + 14z)

open the brackets:

2x^2 - y^3 + 5z - 5x^2 + 7y^3 - 14z

simplify:

=> -3x^2 - y^3 +5z + 7y^3 - 14z [2x^2 - 5x^2 = -3x^2]

=> -3x^2 + 6y^3 + 5z - 14z [ -y^3 + 7y^3 = 6y^3]

=> -3x^2 + 6y^3 - 9z [ 5z - 14z = -9z]

Answer 2

Answer:
`-3x^2+6y^3-9z`

Explanation:

`(2x^2-y^3+5z)-(5x^2-7y^3+14z)` given

`2x^2-y^3+5z-5x^2+7y^3-14z` use distributive property and distribute the -

`-3x^2+6y^3-9z` final answer