Question

resolva a equação x2-10x+16:0

Answer 1

x2-10x+16:0

Δ = (-10)² - 4.1.16= 100 - 64 = 36                            √36 = 6
  

x = 10+/-6 ==> x1 =  8    e  x2 = 2
          2

Answer 2

Explicação passo-a-passo:

$\sf x^2-10x+16=0$

$\sf \Delta=(-10)^2-4\cdot1\cdot16$

$\sf \Delta=100-64$

$\sf \Delta=36$

$\sf x=\dfrac{-(-10)\pm\sqrt{36}}{2\cdot1}=\dfrac{10\pm6}{2}$

$\sf x'=\dfrac{10+6}{2}~\Rightarrow~x'=\dfrac{16}{2}~\Rightarrow~\red{x'=8}$

$\sf x"=\dfrac{10-6}{2}~\Rightarrow~x"=\dfrac{4}{2}~\Rightarrow~\red{x"=2}$