Question

Usando formula d Bhaskara resolva:
X²+X=15

Answer 1

x^2+x=15
x^2+x-15=0

(-b+-√(b^2-4.a.c))/2.a
(-1+-√(-1^2-4.1.-15))/2.1
(-1+-√61)/2
-1+7,81/2= 3,41
-1-7,81/2=-4,41