No.
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no x² is the product of 2 rational numbers in this case the same 2 numbers x and x The product of two rational numbers is always rational.
The sum of 45 and 15 equals 60. 15 x 3 equals 45.
The additive identity for rational numbers is 0. It is the only rational number such that, for any rational number x, x + 0 = 0 + x = x
x = 45
X-45=12 ________ +45 +45 ________ x= 57