No stupid answers... college level algebra.
2007-01-04 09:57:08 · 3 answers · asked by girl_pink 1 in Science & Mathematics ➔ Mathematics
The square root of a, or sqrt(a), is a rational number when a is a perfect square. Here are examples of perfect squares:
a = 1/4 {therefore, sqrt(1/4) = 1/2}
a = 4 {therefore, sqrt(4) = 2}
a = 0 {therefore, sqrt(0) = 0}
The following are examples of numbers which are NOT perfect squares: 3, 7, 10, 17.
Negative numbers can never be perfect squares.
2007-01-04 10:03:06 · answer #1 · answered by Puggy 7 · 0⤊ 0⤋
sqrt a's a rational number
if
a=(b/c)^2
c not = 0
so, if a is the square of rational numbers
2007-01-04 10:02:29 · answer #2 · answered by no man 2 · 0⤊ 0⤋
the variable must be a nonnegative rational number
2007-01-04 09:59:20 · answer #3 · answered by Anonymous · 0⤊ 1⤋