Question

What are the solution for
1.Y²=-2+3y
2.Y²+3y=40
3.4y²-9=0

Answer 1

Answer:

3) 4y^2=9

y=√9/√4

y=3/4....

2)y^2+3y-40=0

y^2+8y-5y-40=0

y(y+8)-5(y+8)=0

(y-5)(y+8)=0

y=5 or -8....

1)y^2-3y+2=0

y^2-2y-y+2=0

y(y-2)-1(y-2)=0

(y-1)(y-2)=0

y=1 or 2