Question

(7x^2+x+1)-(6x^2+x-1)

Answer 1

just subtract the like terms

Answer 2

x^2+2

Answer 3

first, 7x^2-6x^2= x^2

Answer 4

7x^2-6x^2 = x^2
x-x = 0
1--1 = 1+1= 2

Answer 5

second, x - (+)x = 0

Answer 6

third, 1 - (-) 1= 2

Answer 7

so the answer would be x^2+2