Question

-x²+10x-25=0
preciso da resolução desta equação

Answer 1

-x² +10x -25 = 0 *(-1)

x² -10x +25 = 0

$\mathsf{\Delta=b^2-4ac}$

100 -25 * 4 = 0

$\mathsf{x = \frac{-b \pm \sqrt{\Delta} }{2a}}$

10/2 = 5

{5}

$\underline{\mathsf{Resposta\to } {5}}$

Answer 2

Resposta:

$S=\{5\}$

Explicação passo-a-passo:

- x² + 10x - 25 = 0

x² - 10x + 25 = 0

$a=1\\b=(-10)\\c=25$

$\Delta=b^{2} -4ac\\\Delta=(-10)^{2}-4\times1\times25\\\Delta=100-100\\\Delta=0$

$x=\frac{-b\pm\sqrt{\Delta} }{2a} \\\\x=\frac{-(-10)\pm\sqrt{0} }{2\times1} \\\\x=\frac{10\pm0}{2}$

$x_{1} =\frac{10+0}{2} =\frac{10}{2} =5\\\\x_{2}=\frac{10-0}{2}=\frac{10}{2} =5$