There are an infinite number of them.
Here are a few:
x=0, y=-4
x=1, y=-3
x=2, y=-2
x=3, y=-1
x=4, y=0
x=5, y=+1
x=6, y=2
x=7, y=3
x=8, y=4
x=9, y=5
x=9.1, y=5.1
x=9.123, y=5.123
x=9.26704, y=5.26704
x=9.1415926535, y=5.1415926535
.
.
etc.
x4 - 81 = 0x4 = 81x = 3
28 is.
7
yes
Not necessarily.
30 times 4 equals 120
9 x 4 = 36
N = x4 x8 = x4+4 = (x4)2 = N2
It's not, 4x4=16.
if c = x2 then cx2 = x4
x^4 is not an inequality. (An inequality has a "bigger than or equal to/less than or equal to/less than/bigger than" sign involved. I.e not an "equals" sign, since this would be an "equality"). But x^4 is not an equality, nor an inequality.
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