Question

(x³ + 5² + 10x - 4) - (2x³ + 3x² - 8x -4) polynomials
help!!!​

Answer 1

Answer:

$-x^{3} - 3x^{2} + 18x+25$

Step-by-step explanation:

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

=(x³ + 25 + 10x - 4) - (2x³ + 3x² - 8x -4)

=(x³ + 25 + 10x - 4) - 2x³ - 3x² + 8x +4

=(x³ + 21 + 10x ) - 2x³ - 3x² + 8x +4

=x³ + 21 + 10x - 2x³ - 3x² + 8x +4

= -x³ + 21 + 10x - 3x² + 8x +4

=  -x³ + 25+ 10x - 3x² + 8x

=  -x³ + 25+ 18x - 3x²

=   -x³ -3x² + 18x +25