# Is there any quicker and easier way to remember the laws of indices and the quadratic formulas?

There are three laws of indices that need to be remembered to simplify any expression with different indices.

a^m*a^n = a^(m+n)

a^m/a^n = a^(m - n)

(a^m)^n = a^(m*n)

The quadratic formula that gives the roots of a quadratic equation ax^2 + bx + c = 0 is:` x1 =...

There are three laws of indices that need to be remembered to simplify any expression with different indices.

a^m*a^n = a^(m+n)

a^m/a^n = a^(m - n)

(a^m)^n = a^(m*n)

The quadratic formula that gives the roots of a quadratic equation ax^2 + bx + c = 0 is:` x1 = (-b + sqrt(b^2 - 4ac))/(2a)` and `x2 = (-b - sqrt(b^2 - 4ac))/(2a)`

This is quite a simple formula with the roots differentiated only by the sign before the term `sqrt(b^2 - 4ac)` . Solve a few problems using the formula and you will remember it.

Approved by eNotes Editorial Team