What are the solutions to the equation x^2-8x=5 ?

The solutions to the equation x^2-8x=5 are x=4+sqrt(21),x=4-sqrt(21)

Find the zeros of x^2-8x=5

The zeros of x^2-8x=5 are x=4+sqrt(21),x=4-sqrt(21)

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x^{2} - 8 x = 5

x = 4 + 21, x = 4 - 21

Decimal Notation

x = 8.58257 \dots, x = - 0.58257 \dots

Solution steps

x^{2} - 8 x = 5

Move

5

to the left side

x^{2} - 8 x - 5 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 8 ) \pm ( - 8 ) ^{2} - 4 \cdot 1 \cdot ( - 5 )}{2 \cdot 1}

(- 8)^{2} - 4 \cdot 1 \cdot (- 5) = 221

x_{1, 2} = \frac{- ( - 8 ) \pm 2 21}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- ( - 8 ) + 2 21}{2 \cdot 1}, x_{2} = \frac{- ( - 8 ) - 2 21}{2 \cdot 1}

x = \frac{- ( - 8 ) + 2 21}{2 \cdot 1} : 4 + 21

x = \frac{- ( - 8 ) - 2 21}{2 \cdot 1} : 4 - 21

The solutions to the quadratic equation are:

x = 4 + 21, x = 4 - 21

\frac{5 π}{3}

- 8 x < 8

35 s^{2} + 21 s - 14

\frac{( \frac{3}{( x + h ) ^{2}} - \frac{3}{x ^{2}} )}{h}

\frac{- 6 j ^{- 9}}{( - 2 j ^{4} ) ^{3}}

What are the solutions to the equation x^2-8x=5 ?
The solutions to the equation x^2-8x=5 are x=4+sqrt(21),x=4-sqrt(21)
Find the zeros of x^2-8x=5
The zeros of x^2-8x=5 are x=4+sqrt(21),x=4-sqrt(21)