usmarine4life44
usmarine4life44 usmarine4life44
  • 21-04-2017
  • Mathematics
contestada

Solve by using the square root method.

4x2−8=136
Question 3 options:

{-2, 2}


{-6, 6}


{-12, 12}


{-144,144}

Save

Respuesta :

irspow
irspow irspow
  • 21-04-2017
4x^2-8=136 subtract 136 from both sides

4x^2-144...this is a difference of perfect squares so

(2x+12)(2x-12)

x=±6 or as they put it:

{-6, 6}
Answer Link

Otras preguntas

which statement is correct about the law of conversation of energy
IS ANYONE HELP ? this is my hw :)
please please help its not 4
Chris bought six pounds of apples for 10.80. How much would 15 pounds of apples cost at the same price per pound?
a coin has a diameter 2.2cm. If the coin is rolled through 45 complete revolutions, what distance will it travel?
what are 5 foods that should be consumed daily in a diet
Rosie got a bad grade on a test. Instead of admitting that she didn't study as much as she should have, she tells her parents that it is because the teacher did
What is the approximate volume of the cylinder of 4cm and 9cm? Use 3.14 for π.
State all integer values of x in the interval -2<=x<=4 that satisfy the following inequality: 5x+5>=3
The Tony Hawk Skate Park has a 5 year instalment loan with monthly payments of $5.000 including interest Currently the first twelve monthly payments have been r