Question

****-2x^2(-5x^2+4x^3) in standard form?

Answer 1

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

Answer 2

$-2 x^{2} (-5 x^{2} +4 x^{3} )$   Use distributive property

$-2 x^{2} (-5 x^{2}) +-2 x^{2} (4 x^{3} )$

$10 x^{2+2} +-8 x^{2+3}$

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

$-8 x^{5}+ 10 x^{4}$  <-answer