Question

ugi
${x}^{2} + 2x - 8 = 0$
​

Answer 1

Para responder é só usar bhaskara

x= -b ±√b^2-4ac
———————
2a

a)1
b)2
c)-8


x= -2 ±√2^2-4•1•(-8)
————————
2•1


x= -2 ±√4+32
—————
2

x= -2 ± 6
———-
2


x1= -4
x2= 2