Question

Write -2x 2(-5x 2 +4x 3) in standard form.

Answer 1

This in standard form is -28x + 10. 

Answer 2

`-8x^(5) + 10x^(4)`

Explanation:

We need to write the terms by descending degree:

Distribute -2 and don't worry about the exponents yet.

`-2x(-5x) + -2x(4x) = 10x - 8x`

Now ADD the exponents.

`10x^(2+2) - 8x^(2+3) = 10x^(4) - 8x^(5)`

Last, put the polynomials in order from the greatest exponent to the least.

`-8x^(5) + 10x^(4)`