What are the solutions to the equation x^2+9=8x ?

The solutions to the equation x^2+9=8x are x=4+sqrt(7),x=4-sqrt(7)

Find the zeros of x^2+9=8x

The zeros of x^2+9=8x are x=4+sqrt(7),x=4-sqrt(7)

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x^{2} + 9 = 8 x

x = 4 + 7, x = 4 - 7

Decimal Notation

x = 6.64575 \dots, x = 1.35424 \dots

Solution steps

x^{2} + 9 = 8 x

Move

8 x

to the left side

x^{2} + 9 - 8 x = 0

Write in the standard form

a x^{2} + b x + c = 0

x^{2} - 8 x + 9 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 8 ) \pm ( - 8 ) ^{2} - 4 \cdot 1 \cdot 9}{2 \cdot 1}

(- 8)^{2} - 4 \cdot 1 \cdot 9 = 27

x_{1, 2} = \frac{- ( - 8 ) \pm 2 7}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- ( - 8 ) + 2 7}{2 \cdot 1}, x_{2} = \frac{- ( - 8 ) - 2 7}{2 \cdot 1}

x = \frac{- ( - 8 ) + 2 7}{2 \cdot 1} : 4 + 7

x = \frac{- ( - 8 ) - 2 7}{2 \cdot 1} : 4 - 7

The solutions to the quadratic equation are:

x = 4 + 7, x = 4 - 7

x, x^{2} y + y^{2} x = 6

p, x^{2} p^{2} + x y p - 6 y^{2} = 0

x^{2} - 9 x + 16 = 0

(2 - k) x^{2} + 2 k x - k + 2 = 0

x^{2} - 7 x - 10 = 8

What are the solutions to the equation x^2+9=8x ?
The solutions to the equation x^2+9=8x are x=4+sqrt(7),x=4-sqrt(7)
Find the zeros of x^2+9=8x
The zeros of x^2+9=8x are x=4+sqrt(7),x=4-sqrt(7)