Here we look at squaring expressions that involve radicals because people tend to make some common mistakes while solving such expressions. Take 5 times the square root of y quantity squared, the answer here is not 5y. Here's the reason, square means to multiply something with itself so the square of 5 root y would be 5 root y into 5 root y. So 5 x 5 is 25 and under root y into under root y equals just y so the answer will be 25y.
Now take under root of (x3) being added into 7 quantity squared. This will not be x3+49. The reason for this is that you can't distribute a square over addition. Now the same principle will apply here, both under root of (x3) and 7 have to be multiplied separately to under root of (x3) added into 7 with a plus sign in the middle. It will be simplified to a three term answer with the radical still there.
How To: Square expressions involving radicals
 Hot
 Latest

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

How To: Find the Percent Given Two Numbers

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Calculate Faster Than a Calculator

How To: Calculate the area of a parallelogram

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

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

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

How To: Find the area of a parallelogram using geometry

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

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

How To: Find the average value of a function over an interval

How To: Expand fractions

How To: Calculate lateral & total area of a cylinder

How To: Divide small numbers by big numbers

How To: Calculate percent composition for chemistry

How To: Solve percentages without a calculator

How To: Learn Calculus in 20 minutes

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

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

How To: Find the Percent Given Two Numbers

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Calculate Faster Than a Calculator

How To: Calculate the area of a parallelogram

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

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

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

How To: Find the area of a parallelogram using geometry

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

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

How To: Find the average value of a function over an interval

How To: Expand fractions

How To: Calculate lateral & total area of a cylinder

How To: Divide small numbers by big numbers

How To: Calculate percent composition for chemistry

How To: Solve percentages without a calculator

How To: Learn Calculus in 20 minutes

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)
Be the First to Comment
Share Your Thoughts