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 racetrack accepts bets that consist of picking the first and second finisher, regardless of the order that the two racers finished. there are eight racers in
What letter comes next A Z E B I Y O?
Solve 5r2 – 12 = 68. {±4} {±5} {±3} {±6}
In early 1998, the unemployment rate in eastern germany was _______.
I NEED THE ANSWER PLEASE
plzzz help 25 points given line EA and line EC are common external tangents of circle G and circle B, line DC=44, line GF= 7, line EG=25 What is the measuremen
Use the following graph below , select all Statements that are true Please and thank you
It is appropriate for clients diagnosed with type 2 diabetes to take oral antidiabetic agents and forego recommended dietary changes.​
Can you help me with my definitions
Which of the following ratios correctly describes the sine function? A. opp/adj B. opp/hyp C. adj/hyp