ashbrown2117 ashbrown2117
  • 03-10-2018
  • Mathematics
contestada

i need help solving x^2-2=7 by factoring

Respuesta :

MollieToliver MollieToliver
  • 03-10-2018

x^2-2=7

Subtract 7 from both sides

x^2-2-7=7-7

x^2-9=0

x^2-3^2=0

Using a^2-b^2=(a+b)(a-b)

Where a=x and b=3

(x-3)(x+3)

Answer Link

Otras preguntas

A student walks 1.0 mi west and then 1.0 mi north. afterward, how far is she from her starting point?
Is "the" a pronoun in this sentence?
In chunk 4 how does the relationship between jing mei's mother and auntie lindo contribute to the conflict between jing mei and her mother in the story
He length of each side of a square is 3 in. more than the length of each side of a smaller square. the sum of the areas of the squares is 317in squared .in2. fi
Match each image to the correct sound based on the image provided
During a therapy session, mrs. brown’s therapist, donald, asks her about her dreams because he believes that they are the key to her unconscious mind. in this s
Which best describes the first two years of the revolutionary war
A parcel delivery company delivered 103,000 packages last year, when its average employment was 84 drivers. this year the firm handled 112,000 deliveries with 9
at which stage of the scientific process would a scientist look at experimental data from other scientists to set up a new experimental study
Contrast the atmosphere with the biosphere