Question

como resolver a conta x-5x-6=0 formula de bhaskara

Answer 1

Δ=(-5)² - 4 . 1 . (-6)
Δ= 25 + 24
Δ= 49
$\frac{5 +- \sqrt{49} }{2}$
$\frac{5 +- 7 }{2}$
x' = $\frac{5+7}{2} --\ \textgreater \ 6$
x'' = $\frac{5-7}{2} --\ \textgreater \ -1$

Answer 2

a=1 b=5 c= -6

delta=b²-4.a.c
delta=5²-4.1.(-6)
delta=25+24
delta=49  = raiz quadrada de 49=7

x'=-b+7/2.a        x"=-b-7/2.a
x'=-5+7/2           x"=-5-7/2
x'=2/2                x"=-12/2
x'=1                   x"=-6

S={1 e -6}