This video in the Education category will show you how to simplify radicals before adding or subtracting. By doing this you will find all like radicals which will then ensure that you have all radicals in the simplest form. Let's say you want to subtract square root of 45 from 3 square roots of 20. Now square root of 45 can be written as square root of 9 x square root of 5. Because, 9 and 5 are factors of 45. Similarly, 3 square roots of 20 can be simplified to 3 x square root of 4 x square root of 5. Now square root of 9 x square root of 5 will be 3 square root of 5. And 3 x square root of 4 x square root of 5 will be 3 x 2 x square root of 5 or 6 square root of 5. Square root of 5 being the common radical, subtract 3 from 6 and the result will be 3 square root of 5. When you watch the video this will be very clear.
 Hot
 Latest

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Calculate Faster Than a Calculator

How To: Find the area & perimeter of triangles & squares

How To: Do long division without a calculator

How To: Find the formula of a piecewise function given a graph

How To: Divide small numbers by big numbers

How To: Find and sketch the domain of a multivariable function

How To: Find the volume of a sphere with radius r

How To: Sketch the graph of a piecewise function

How To: Divide exponents with the quotient rule

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Find the area of a triangle when given 2 sides & angle

How To: Find extra points for a parabola (quadractic equation)

How To: Solve for the missing ratios or proportions

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Do long division with decimals

How To: Find the area of irregular shapes

How To: Solve equations involving square roots

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Calculate Faster Than a Calculator

How To: Find the area & perimeter of triangles & squares

How To: Do long division without a calculator

How To: Find the formula of a piecewise function given a graph

How To: Divide small numbers by big numbers

How To: Find and sketch the domain of a multivariable function

How To: Find the volume of a sphere with radius r

How To: Sketch the graph of a piecewise function

How To: Divide exponents with the quotient rule

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Find the area of a triangle when given 2 sides & angle

How To: Find extra points for a parabola (quadractic equation)

How To: Solve for the missing ratios or proportions

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Do long division with decimals

How To: Find the area of irregular shapes

How To: Solve equations involving square roots
Be the First to Comment
Share Your Thoughts