What are the solutions to the equation -5x^2+30x-20=20 ?

The solutions to the equation -5x^2+30x-20=20 are x=2,x=4

Find the zeros of -5x^2+30x-20=20

The zeros of -5x^2+30x-20=20 are x=2,x=4

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- 5 x^{2} + 30 x - 20 = 20

x = 2, x = 4

Solution steps

- 5 x^{2} + 30 x - 20 = 20

Move

20

to the left side

- 5 x^{2} + 30 x - 40 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 30 \pm 3 0 ^{2} - 4 ( - 5 ) ( - 40 )}{2 ( - 5 )}

3 0^{2} - 4 (- 5) (- 40) = 10

x_{1, 2} = \frac{- 30 \pm 10}{2 ( - 5 )}

Separate the solutions

x_{1} = \frac{- 30 + 10}{2 ( - 5 )}, x_{2} = \frac{- 30 - 10}{2 ( - 5 )}

x = \frac{- 30 + 10}{2 ( - 5 )} : 2

x = \frac{- 30 - 10}{2 ( - 5 )} : 4

The solutions to the quadratic equation are:

x = 2, x = 4

(x - 7)^{2} + (m x + c - 9)^{2} = 9

(x - 3)^{2} = - 6 x + 12

(- \frac{1}{4})^{2} + x^{2} = 1

x^{2} - 12 x + 2 = - 6

x^{2} - 9 x - 15 = 0

What are the solutions to the equation -5x^2+30x-20=20 ?
The solutions to the equation -5x^2+30x-20=20 are x=2,x=4
Find the zeros of -5x^2+30x-20=20
The zeros of -5x^2+30x-20=20 are x=2,x=4