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: Calculate Faster Than a Calculator

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

How To: Find the Percent Given Two Numbers

How To: Find a number given Its percent

How To: Work with linear, quadratic & exponential models

How To: Find the area of a parallelogram using geometry

How To: Solve percentages without a calculator

How To: Find the equation of a circle given: center & tangent

How To: Find the equation of a line given 1 point

How To: Figure out and calculate sales tax

How To: Decode binary numbers

How To: Do long division without a calculator

How To: Find the slope of a line given 2 points with fractions

How To: Simplify fourth roots

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

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

How To: Be a human calculator

How To: Factor a trinomial with negative leading coefficient

How To: Find outliers using the Zscore method

How To: Find the opposite and absolute value of a number

How To: Calculate Faster Than a Calculator

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

How To: Find the Percent Given Two Numbers

How To: Find a number given Its percent

How To: Work with linear, quadratic & exponential models

How To: Find the area of a parallelogram using geometry

How To: Solve percentages without a calculator

How To: Find the equation of a circle given: center & tangent

How To: Find the equation of a line given 1 point

How To: Figure out and calculate sales tax

How To: Decode binary numbers

How To: Do long division without a calculator

How To: Find the slope of a line given 2 points with fractions

How To: Simplify fourth roots

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

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

How To: Be a human calculator

How To: Factor a trinomial with negative leading coefficient

How To: Find outliers using the Zscore method

How To: Find the opposite and absolute value of a number
Be the First to Comment
Share Your Thoughts