0.7143
1/x^2
We can't say, until we know what 'x' is.
X to the 9th power
1
X^4 divided by Y^2
x7
We can't say, until we know what 'x' is.
Infinity.
0.5556
X to the 9th power
1
x to the power of 6
57 x 9 - (18/4) = 703120.5
X^4 divided by Y^2
x9
x7
x8
x to the power a divided by x to the power b is x to the power (a - b) When a and b are equal then this is x to the power a divided by x to the power a, ie 1. x to the power (a - a) = x to the power zero. Things which are equal to the same thing are equal to each other, so 1 = x to the power zero.