Question

please view the image to get a better understanding ..im stressing :((
*please include the work to show what Danielle did wrong
What is the sum of x³ + 5x² – 7 and
5x³ – 3x² + 2x – 1?

Answer 1

Answer:

Daniella didn't do distributive property before she started.

Step-by-step explanation:

($x^{3}$+5$x^{2}$-7) + (5$x^{3}$-3$x^{2}$+2x-1)

5$x^{6}$-3$x^{5}$+2$x^{4}$-1$x^{3}$+25$x^{5}$-15$x^{4}$+10$x^{3}$-5$x^{2}$-35$x^{3}$+21$x^{2}$-14x+7

5$x^{6}$+22$x^{5}$-13$x^{4}$-26$x^{3}$+16x$x^{2}$-14x+7