Question

help help me to do this and I will mark you as brainlist​

Answer 1

Answer:

7 from 3x-x square+ 7 5x

Step-by-step explanation:

Answer 2

Answer:

Sum of 3x-x²+7 and -2x-3+5x².

3x-x²+7 +(-2x-3+5x²).

3x-x²+7 -2x-3+5x².

3x-2x-x²+5x²+7-3.

x+4x²+4.

Difference of x+4x²+4 from 7.

7-(x+4x²+4).

7-x-4x²+4.

11-x-4x².

Step-by-step explanation:

HOPE THIS WILL HELP YOU:)