Question

X2ao quadrado-10X+25=0​

Answer 1

Resposta:

x = 5

Explicação passo a passo:

x² - 10x + 25 = 0​

a = 1

b = -10

c = 25

Δ = b²-4.a.c

Δ = (- 10)²-4.1.25

Δ = 100 - 100

Δ = 0

x = - b ± √Δ / 2.a

x = - (- 10) ± √0 / 2.1

x = 10 / 2

x = 5

Answer 2

Resposta:

Olá,

$\boxed{x^2 - 10x + 25 = 0}\\\boxed{a = 1}\\\boxed{b = -10}\\\boxed{c = 25}$

$\boxed{\begin{array}{lr} \Delta = b^2 - 4ac \\\Delta = -(-10)^2 - 4 \times 1 \times 25\\\Delta = 10^2 - 4 \times 1 \times 25\\\Delta = 100 - 4 \times 1 \times 25\\\Delta = 100 - 4 \times 25\\\Delta = 100 - 100\\\Delta = 0\end{array}}$

$\boxed{\begin{array}{lr} x = \dfrac{-b \pm \sqrt{\Delta}}{2a}\\\\x = \dfrac{-(-10) \pm \sqrt{0}}{2 \times 1}\\\\x = \dfrac{10 \pm 0}{2}\\ \end{array}}$

$\boxed{\begin{array}{lr} x_1 = \dfrac{10 + 0}{2}\\\\x_1 = \dfrac{10}{2}\\\\x_1 = 5 \end{array}}$

$\boxed{\begin{array}{lr} x_2 = \dfrac{10 - 0}{2}\\\\x_2 = \dfrac{10}{2}\\\\x_2 = 5 \end{array}}$

$\boxed{\boxed{S = \{5~ ;\ 5\}}}$

Ω | Ass: Fallen Angel | Ω

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