What is the answer of x2 9?
One way to solve the quadratic equation x2 = 9 is to subtract 9 from both sides to get one side equal to 0: x2 – 9 = 0. The expression on the left can be factored: (x + 3)(x – 3) = 0.
How do you calculate square root in Excel?
In Microsoft Excel, the caret symbol (^) acts as the exponent, or power, operator. For example, to square the number 5, i.e. raise 5 to the power of 2, you type =5^2 in a cell, which is equivalent to 52. For example, to get the square root of 25, you type =25^(1/2) or =25^0.5 in a cell.
How do you solve x2 9 using the square root method?
Solving Quadratics Using Square Roots One way to solve the quadratic equation x2 = 9 is to subtract 9 from both sides to get one side equal to 0: x2 – 9 = 0. The expression on the left can be factored: (x + 3)(x – 3) = 0. Using the zero factor property, you know this means x + 3 = 0 or x – 3 = 0, so x = −3 or 3.
How to solve square root step by step?
To solve square root problems, understand that you are finding the number that, when multiplied by itself, equals the number in the square root. For quick recall, memorize the first 10-12 perfect squares, so that you recognize the square root of numbers like 9, 25, 49, or 121.
How to calculate square root in Excel [top 5 methods]?
Select the cell you want to insert the square root symbol
What are the steps in solving square roots?
What are the steps in solving square roots? Find a Perfect Square. Perfect squares are numbers that are equal to a number times itself. Rewrite the Square Root. Next,use the perfect square you just found to rewrite your square root as a multiplication expression. Pull the Square Root Apart. Reduce the Perfect Square. Double-check.
What are the steps in extracting square root?
by extracting the roots. Extracting roots involves isolating the square and then applying the square root property. After applying the square root property, you have two linear equations that each can be solved. Be sure to simplify all radical expressions and rationalize the denominator if necessary.