SOLUTION: x^2-36=0

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Question 200758: x^2-36=0
Found 3 solutions by rfer, jim_thompson5910, jorel555:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
square root of 36=6

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

x%5E2-36=0 Start with the given equation.


Notice that the quadratic x%5E2-36 is in the form of Ax%5E2%2BBx%2BC where A=1, B=0, and C=-36


Let's use the quadratic formula to solve for "x":


x+=+%28-B+%2B-+sqrt%28+B%5E2-4AC+%29%29%2F%282A%29 Start with the quadratic formula


x+=+%280+%2B-+sqrt%28+%280%29%5E2-4%281%29%28-36%29+%29%29%2F%282%281%29%29 Plug in A=1, B=0, and C=-36


x+=+%280+%2B-+sqrt%28+0-4%281%29%28-36%29+%29%29%2F%282%281%29%29 Square 0 to get 0.


x+=+%280+%2B-+sqrt%28+0--144+%29%29%2F%282%281%29%29 Multiply 4%281%29%28-36%29 to get -144


x+=+%280+%2B-+sqrt%28+0%2B144+%29%29%2F%282%281%29%29 Rewrite sqrt%280--144%29 as sqrt%280%2B144%29


x+=+%280+%2B-+sqrt%28+144+%29%29%2F%282%281%29%29 Add 0 to 144 to get 144


x+=+%280+%2B-+sqrt%28+144+%29%29%2F%282%29 Multiply 2 and 1 to get 2.


x+=+%280+%2B-+12%29%2F%282%29 Take the square root of 144 to get 12.


x+=+%280+%2B+12%29%2F%282%29 or x+=+%280+-+12%29%2F%282%29 Break up the expression.


x+=+%2812%29%2F%282%29 or x+=++%28-12%29%2F%282%29 Combine like terms.


x+=+6 or x+=+-6 Simplify.


So the solutions are x+=+6 or x+=+-6


Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-36=0
x^2=36
x=6,-6!!!!!!!!!