Answer:
5y^2 +11y +2
x^2 +y^2 -4x +y -21
Explanation:
got it right on edge 2020 2021
9514 1404 393
1) (6y^2 + 4y + 5) – (3 – 7y + y^2) = 6y^2 +4y +5 -3 +7y -y^2
= y^2(6 -1) +y(4 +7) +(5 -3)
= 5y^2 +11y +2
__
2) y^2 + y + (x – 7)(x + 3) = y^2 +y +x^2 -4x -21
= x^2 +y^2 -4x +y -21
4.4m questions
5.7m answers