dbrown28 dbrown28

20-04-2020
Mathematics

contestada

Solve for all values of x by factoring.
x² + 2x - 4 = 2x

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

20-04-2020

Answer:

x=2 x=-2

Step-by-step explanation:

x² + 2x - 4 = 2x

Subtract 2x from each side

x² + 2x-2x - 4 = 2x-2x

x^2 -4 = 0

Factor

We know this is the difference of squares

(x-2)(x+2) =0

Using the zero product property

x-2 =0 x+2 =0

x=2 x=-2

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