Question

X2+5x+6=0
-x2-9x+52=0

Answer 1

Resposta:

• X'= -2

X"= -3

•X'= 13

X"= 4

Explicação passo-a-passo:

•∆=b²-4ac

∆=5²-4.1.6

∆= 25-24

∆= 1

X= -b ± √∆/ 2a

X= -5± 1/2

X'= -4/2

X'= -2

X"= -6/2

X"= -3

•∆=b²-4ac

∆= -9²- 4. (-1). 52

∆= 81 + 208

∆= 289

X= -b±√∆/2a

X= 9± 17/ -2

X'= 26/2

X'= 13

X"= -8/-2

X"= 4