Question

Resolva a equação x²+10x+25=0?

Answer 1

Fórmula:

Δ=b² - 4.a.c

a=1 b=10 c 25

Δ=100-4.1.25

Δ=100-100

Δ=0

Fórmula:

x` e x``=$\frac{-b+-\sqrt{Delta}}{2.a}$

x` e x``=$\frac{-10 -+ \sqrt[]{0} }{2.1}$

x`=$\frac{-10+0}{2}=-5$  

x``=$\frac{-10-0}{2}=-5$

S={-5}