Question

aplicando a formula de bhaskara resolva as seguintes equações y ao quadrado+8y+15=0

Answer 1

a= 1 
b= 8
c= 15

x= $\frac{-8+- \sqrt{ (8)^{2} - 4 . 1 . 15 } }{2.1}$

$x= \frac{- 8 +- \sqrt{64 - 60} }{2}$

$x= \frac{-8 +- \sqrt{4} }{2} = \frac{-8 +-2}{2}$

$x1= \frac{-8-2}{2} = \frac{-10}{2} = -5$

$x2= \frac{-8+2}{2} = \frac{-6}{2} = -3$

Answer 2

y²+8y+15
a=1      b=8     c=15
Delta=(8)²-4.1.15
Delta=64-60
Delta=24
X=-(8)+-raiz quadrada 24/2
x=-8+-4,89/2

x=8+4,89/2
x=12,89/2

x=8-4,89
x=3,11