Question

Quanto é: |x² - 5x - 6|= 0
Me ajudem pfv

Answer 1

Resposta:

espero ter ajudado

x^2-5X-6=0

a)1

b)(-5)

c)(-6)

b^-4*a*c

(-5)^2-4*1*(-6)

25+24

delta=1

-b+/-√delta/2*a

-(-5)+/-√1/2*a

5+/-1/2

x1=5+1/2

X=6/2

x=3

x2=5-1/2

x2=4/2

x2=2

Answer 2

Explicação passo-a-passo:

$\sf |~x^2-5x-6~|=0$

$\sf x^2-5x-6=0$

$\sf \Delta=(-5)^2-4\cdot1\cdot(-6)$

$\sf \Delta=25+24$

$\sf \Delta=49$

$\sf x=\dfrac{-(-5)\pm\sqrt{49}}{2\cdot1}=\dfrac{5\pm7}{2}$

$\sf x'=\dfrac{5+7}{2}~\Rightarrow~x'=\dfrac{12}{2}~\Rightarrow~\red{x'=6}$

$\sf x"=\dfrac{5-7}{2}~\Rightarrow~x"=\dfrac{-2}{2}~\Rightarrow~\red{x"=-1}$

O conjunto solução é S = {-1, 6}