А)(y-1)(y+1)-(y-2)=3+y²б)m²-4m+4=0​

Question

А)(y-1)(y+1)-(y-2)=3+y²б)m²-4m+4=0​

Answer 1

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

-y=2

y=-2

б) (m-2)^2=0

m-2=0

m=2