Question

resolva a equaçao x²+17x+30=0 usando a FORMULA DE BHASKARA

Answer 1

x²+17x+30=0
∆=b²-4ac
∆=(17²)-4*1*30
∆=289-4*1*30
∆=289-(120)
∆=169

X1= -b+√∆
-----------
2*a
X1= -(17)+√169
--------------
2*1
X1=(-17)+13
------------
2
X1= 4
----
2
X1= 2


X2= -b-√∆
------------
2*a
X2= -(17) -√169
--------------
2*1
X2= (-17)-13
-----------
2
X2= -30
------
2
X2= -15



Espero ter ajudado