32 x (8*) = 3 ; give an exact solution for * (* is a power)
any help would be appreciated
Let "x" be the number that we want to find that fits the problems guidelines. It doesn't matter what it is yet, but we know it is a real number, so just call it x.
So meaning 32 times 8 times x equals 3. We want to rearrange this to get this in the form of x=... so let's do that. The opposite operation of multiplication is division, so if we want to "cancel" the 32, we can divide by 32 on both sides of the equation and still keep the = sign. Do the same to the 8 and you should get
thnx man that helped a lot.
I also have another one if you dont mind. I just dont know what to do next.
log10 (x - 5) + log10 (3x + 6) = log10 (x+4)
log10 (x - 5)(3x + 6) = log10 (x + 4)
(x - 5)(3x + 6) = (x + 4)
3x^2 - 9x - 30 = x + 4
3x^2 - 9x - 34 = x
(the ^2 is squared)
Im lost after that, i dont know how to factor that.
(the "10's" should be lowered)