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

What is the product of 840 and 4.6 \times 10^24.6×10 2 expressed in scientific notation?
N₂ + H₂ NH3 how do i balance this equation?
Which kinds of evidence are included in the excerpt? Select 3 options. a statistic an example a quote a hypothetical situation a fact the author’s personal stor
How do you activate the Slicer Tools contextual tab? Select a PivotTable and it will appear. Select a slicer and it will appear. Click Slicer and then Options.
£78 is split equally between 5 people how many will each person get
The parallelogram shown below has an area of 140
the cells of most prokaryotic cells have a what?
what do all Roman languages have in common
solve the equation below for x cx - 4 = 7 A. x = 11/c B. x = c/11 C. x = c/e D. x = 3/c
In the Arab world, enslaved people were often Arab. Asian. Indian. European.