Question

Write -2x^2 ( -5x^2 + 4x^3 ) in Standard Form.

Answer 1

- 8$x^{5}$ + 10$x^{4}$

distribute the parenthesis by - 2x²

= 10$x^{4}$ - 8$x^{5}$

= - 8$x^{5}$ + 10$x^{4}$ ← in standard form

Note that a polynomial expressed in standard form

The first term is the term with the highest exponent followed by the other terms in descending order of exponents

Answer 2

-2x^2=-4x.

(-5x^2+4x^3)=(-25x+64x).

-4x(-25x+64x)=100x-256x.

100x-256x=-156x

-156x is your final answer.