What are the solutions to the equation x^2-2x-7.88=0 ?

The solutions to the equation x^2-2x-7.88=0 are x=(5+sqrt(222))/5 ,x=(5-sqrt(222))/5

Find the zeros of x^2-2x-7.88=0

The zeros of x^2-2x-7.88=0 are x=(5+sqrt(222))/5 ,x=(5-sqrt(222))/5

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x^{2} - 2 x - 7.88 = 0

x = \frac{5 + 222}{5}, x = \frac{5 - 222}{5}

Decimal Notation

x = 3.97993 \dots, x = - 1.97993 \dots

Solution steps

x^{2} - 2 x - 7.88 = 0

Multiply both sides by

100

100 x^{2} - 200 x - 788 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 200 ) \pm ( - 200 ) ^{2} - 4 \cdot 100 ( - 788 )}{2 \cdot 100}

(- 200)^{2} - 4 \cdot 100 (- 788) = 40222

x_{1, 2} = \frac{- ( - 200 ) \pm 40 222}{2 \cdot 100}

Separate the solutions

x_{1} = \frac{- ( - 200 ) + 40 222}{2 \cdot 100}, x_{2} = \frac{- ( - 200 ) - 40 222}{2 \cdot 100}

x = \frac{- ( - 200 ) + 40 222}{2 \cdot 100} : \frac{5 + 222}{5}

x = \frac{- ( - 200 ) - 40 222}{2 \cdot 100} : \frac{5 - 222}{5}

The solutions to the quadratic equation are:

x = \frac{5 + 222}{5}, x = \frac{5 - 222}{5}

x, x^{2} y + y^{2} = 10

3 x^{2} + 9 x - 120 = 0

c^{2} = 1 2^{2} + 1 6^{2}

s^{2} + 3 s + 9 = 0

(5 a + 10) x^{2} + 3 a x + 48 = 6 x

What are the solutions to the equation x^2-2x-7.88=0 ?
The solutions to the equation x^2-2x-7.88=0 are x=(5+sqrt(222))/5 ,x=(5-sqrt(222))/5
Find the zeros of x^2-2x-7.88=0
The zeros of x^2-2x-7.88=0 are x=(5+sqrt(222))/5 ,x=(5-sqrt(222))/5