jaelyndrew jaelyndrew
  • 22-03-2020
  • Mathematics
contestada

solve for all values of x by factoring
x^2-2x-4=-2x+5

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 22-03-2020

Answer:

x=3      x=-3

Step-by-step explanation:

x^2-2x-4=-2x+5

Add 2x to each side

x^2-2x+2x-4=-2x+2x+5

x^2 -4 =5

Subtract 5 from each side

x^2 -4-5 = 5-5

x^2 -9 =0

This is the difference of squares

(x-3) (x+3) =0

Using the zero product property

x-3 =0    x+3 =0

x=3      x=-3

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