CAN YOU HELP ME WITH A EQUATION? its the square root of 79 minus 5X equals X minus 11

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Guest Mar 23, 2017

hectictar · Answer 1 · 2017-03-23T03:06:28

one: $\sqrt{79}-5x=x-11$

or

two: $\sqrt{79-5x}=x-11$ ?

MaxWong · Answer 2 · 2017-03-23T01:08:15

I will solve both situations given by hectictar.

Situation 1:

$\sqrt{79}-5x = x-11\\ 6x = \sqrt{79} + 11\\ x = \dfrac{\sqrt{79}+11}{6}$

Situation 2:

$\sqrt{79-5x}=x-11\\ 79-5x = x^2 -22x+121\\ x^2-17x+42=0\\ (x-14)(x-3) = 0\\ x = 14\text{ OR }3$