## rootIn mathematics: - A number used to build up another number by repeated multiplication;
in other words, one of the equal factors of a given number. For example, since 2 × 2 × 2 = 8, two is
said to be the third root or cube root of eight. A root is written as a fractional power of a number. The square root of a number,
*x*, is written as either √*x*or*x*^{1/2}, and represents a number that when multiplied by itself, gives the original number. The fourth root of*x*may be written in radical form as^{4}√*x*or in power form as*x*^{1/4}. Of particular interest are √2, the square root of 2, and*i*, the square root of -1. (See also exponent; power.) - A solution of an equation; i.e. the value(s) of the variable for which
the equation holds. For example, 3 is a root of the equation
*x*^{2}= 9. A root is also called a**zero of a function**because it is a value that will make the function zero (*x*= 3 will make the function f(*x*) =*x*^{ 2}- 9 zero).
werad, which originally meant
the roots of a plant but was later generalized
to mean the origins or beginnings of something, whether it was physical
or mental.## Related category• MATHEMATICAL TERMINOLOGY | |||||

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