Online, "^" is used to designate an exponent, because it avoids the confusion with x being used as an unknown.
I assume the first dash in the last term was supposed to be a zero. In ascending order, they are:
1.4 * 10^-2
1.4 * 10^-1
1.5 * 10^3
2 * 10^3
What is the order of
1.5 x 10^3, 1.4 x 10^-1, 2 x 10^3, and 1.4 x 1-^-2 from least to greatest?
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