(pi - 1) and (2 - pi) Sum = (pi - 1 + 2 - pi) = 1
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No, it is rational. Numbers whose decimal digits either stop or repeat can be written as a fraction and so are rational.
root 2 * root 2 = 2
There are very many uses for irrational numbers. A square, whose sides are a rational number, will have a diagonal of irrational length. The diagonals of most rectangles, with rational sides, will be irrational. The circumference and area of a circle (or ellipse) is related to pi, an irrational number. In the same way that pi is central to geometry, another irrational number, e, is fundamental to advanced calculus.
No, but it is irrational, because there is no rational number whose square is two. Imaginary numbers are the square roots of negative numbers.
An irrational number is a number that can't be written as a fraction with whole numbers on top and bottom.An irrational number written as a decimal never ends. BUT, some rational numbersdo the same thing, so you can't say that just because the decimal never ends, itmust be an irrational number.Here are some rational numbers whose decimals never end:1/31/61/71/91/11