Question

Calculati va rog frumos:
(y-2)*(y+3)-4la puterea 2=5

Answer 1

[tex](y-2)*(y+3)- 4^{2}=5=\ \textgreater \ y*y+y*3-2*y-2*3-16=5=\ \textgreater \ [/tex][tex] y^{2} +3y-2y-6-16=5=\ \textgreater \ y^{2} +y=5+6+16=\ \textgreater \ y^{2} +y=27[/tex]