Question

C=3y^2+4y+4

D=−7y^2+3y−6

D−C=

Answer 1

$- 10 {y}^{2} - y - 10$

Answer 2

C = 3у² + 4y + 4

D = −7y² + 3y − 6

D − C = −7y² + 3y − 6 - (3у² + 4y + 4) =
= −7y² + 3y − 6 - 3у² - 4y - 4 =
= −10y² - y − 10