Answer:
4y (y + 3) + 4 ( y − 3)
4y^2 + 12y + 4y -12
4y^2 + 16y -12
Step-by-step explanation:
32
-2
5+(-7) remember you must keep the sign of the higher number!
y=9 and x=9*sqrt(2)
tan(45)=9/y, 1=9/y, y=9
sin(45)=9/x, 1/sqrt(2)=9/x, x=9*sqrt(2)