SOLUTION: came across a problem that I could not figure out problem was worded this way x^2=49 3(x-5) please assist me in completing this problem and if you could also expl

Algebra ->  Equations -> SOLUTION: came across a problem that I could not figure out problem was worded this way x^2=49 3(x-5) please assist me in completing this problem and if you could also expl      Log On


   

Question 256493: came across a problem that I could not figure out
problem was worded this way
x^2=49 3(x-5)
please assist me in completing this problem
and if you could also explain how to work this problem out correctly
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!

I am guessing it means

1.  Solve this equation:  x%5E2=49       

2.  Then substitute the solution(s) that you get
    into this expression 3%28x-5%29 and simplify.

-----------------------------

1.  x%5E2=49
    x%5E2-49=0
    %28x-7%29%28x%2B7%29=0
    
x-7=0 gives the solution x=7
x%2B7=0 gives the solution x=-7

2.  3%28x-5%29
    3%28%287%29-5%29
    3%287-5%29
    3%282%29
    6

    3%28x-5%29
    3%28%28-7%29-5%29
    3%28-7-5%29
    3%28-12%29
    -36  

Edwin