15-07-2016
Mathematics

contestada

Solve for x... I dont know what to do with the square root

Solve for x I dont know what to do with the square root class=

Respuesta :

Аноним Аноним

15-07-2016

√(x²+13)=2+x
[√(x²+13)]² = (2+x)²
x²+13=4+4x+x²
x²-x²-4x=4-13
-4x=-9
x=-9/-4
x=9/4

To check:
√(x²+13)=√(81/16 +13)=√[(81+208)/16]=√(289/16)=17/4.
2+x=2 + 9/4=(8+9)/4=17/4

Answer Link

Otras preguntas

What is the result when the number 92 is decreased by 50%?

Can someone help me??

Secondary and primary opinion on how Otzi died

the different ways the media informs the public on the daily work of the Zondo Commission?

How many electrons are found in a C and O2-, respectively?

A narrative introducing a new character and their experience in one of the stories Jumanji or Zathura.

Suggest one factor, other than light intensity or carbon dioxide concentration, that could limit the rate of photosynthesis. How could you check if you were rig

Urban settlement increases carbon dioxide emissions by A. Expanding the use of public transformation B. Generating more factories C. Increase the need to drive

I need help! I don't know how to do this

Evaluate 3 - 24 + 8 + 4^2 0 2 16 24