
Cubes and Cube Roots - Math is Fun
It is easy to work out the cube root of a perfect cube, but it is really hard to work out other cube roots. Example: what is the cube root of 30? Well, 3 × 3 × 3 = 27 and 4 × 4 × 4 = 64, so we …
Squares and Square Roots - Math is Fun
There is a fun method for calculating a square root that gets more and more accurate each time around: a) start with a guess (let's guess 4 is the square root of 10) b) divide by the guess …
Solving Radical Equations - Math is Fun
How to solve equations with square roots, cube roots, etc. We can get rid of a square root by squaring (or cube roots by cubing, etc).
Rationalize the Denominator - Math is Fun
"Rationalizing the denominator" is when we move a root (like a square root or cube root) from the bottom of a fraction to the top. Oh No! An Irrational Denominator! The bottom of a fraction is …
nth Roots - Math is Fun
The "nth Root" used n times in a multiplication gives the original value" nth ? "1st, 2nd, 3rd, 4th, 5th, ... nth ... Instead of talking about the "4th", "16th", etc, we can just say the "nth ". The nth …
High School Functions Common Core Standards - Math is Fun
Graph square root, cube root, and piecewise-defined functions, including step functions and absolute value functions. c. Graph polynomial functions, identifying zeros when suitable …
Polynomials: Sums and Products of Roots - Math is Fun
Roots of a Polynomial. A "root" (or "zero") is where the polynomial is equal to zero: Put simply: a root is the x-value where the y-value equals zero. General Polynomial. If we have a general …
Exponents, Roots and Logarithms - Math is Fun
Exponents, Roots (such as square roots, cube roots etc) and Logarithms are all related! Let's start with the simple example of 3 × 3 = 9:
Grade 8 Common Core Standards - Math is Fun
8.EE.A.2 Use square root and cube root symbols to represent solutions to equations of the form x^2 = p and x^3 = p, where p is a positive rational number. Evaluate square roots of small …
Common Functions Reference - Math is Fun
Here are some of the most commonly used functions,and their graphs ... Linear Function ... f(x) = mx b ... Square Function