Question

Resolva: ( y elevado a 2 + 4y - 5 ) + ( -3 elevado a 2 + 12y - 1 )?

Answer 1

(y² +4y -5) + (-3² +12y -1)

(y² +4y +12y +9 -5 -1)

y² +16y +3


Por bháskara:
-16 +/- √(256 -4 x 1 x -1 )/2
-16 +/- √1024 /2
-16 +/- 32 /2

x1= 16/2 = 8
x2= -48/2 = -24

Answer 2

           (y² + 4y - 5) + (-3² + 12y - 1) =
            y² + 4y - 5  + (-9  + 12y - 1) =
            y² + 4y - 5  - 9 + 12y - 1 =
            y² + 16y  - 15