Question

Subtract. (8y + y2 + 7y + 9) - (y2 + 3)​

Answer 1

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{15y + 6}}}}}$

Step-by-step explanation:

$\sf{(8y + {y}^{2} + 7y + 9) - ( {y}^{2} + 3)}$

When there is a ( - ) in front of an expression in parentheses, change the sign of each term

$\dashrightarrow \sf{8y + {y}^{2} + 7y + 9 - {y}^{2} - 3}$

Since two opposites add up to zero, remove them from the expression

$\dashrightarrow{ \sf{8y + 7y + 9 - 3}}$

Add the like terms : 8y and 7y

$\dashrightarrow{ \sf{15y + 9 - 3}}$

The negative and positive integers are always subtracted but posses the sign of the bigger integer

$\longrightarrow{ \sf{15y + 6}}$

Hope I helped!

Best regards! :D