x^2 -72 = 0
x^2 = 72
x = +- sqrt (72)
I can see a graphical solution shows x= 0...and I can see it by LOOKING at it....but I am kinda stuck as to how to solve it algebraically... Hmmmmm....
NOW I see what you are saying......
working on yet ANOTHER (in?)correct solution...
Thanx for keeping me mathematically honest !
6 and 9 have are common factors of 18 so re-write
2 + 8/18 x = 15/18 Now multiply through by 18
36 + 8x = 15
3/4 and 2/5 have a common denominator of 20, so re-write
15/20x - 2 = 8/20 Now multiply both sides by 20
15x-40 = 8
No.....I divided by 9 then I simplified 1^(x+1) to ' 1 ' since 1 to any power is still just 1
Simplify (2+x)/8x / (3+x)/x ?
Flip the lower fraction and multiply
(2+x)/8x * x/(3+x) = (2x+x^2) / (24x+8x^2)
Sure you can.....let's call it "divide both sides of the equation by 9 '
Here is a better solution:
3^2(x+1) + 3^(3(x+1) = 3^2 * 4 Divide by 3^2
1^(x+1) + 3^(x+1) = 4
1 + 3^(x+1) = 4
3^(x+1) = 3
(x+1) LOG 3 = LOG 3
x+1 = 1
x=0
Hmmmm......but I think I made an error that you didn't ! Step 1 to step 2 is not true (now in red).....but the answer worked out by chance!
