eHow launches Android app: Get the best of eHow on the go.
How to Write a Decimal as a Percent
How to Write Proportions
Adding & Subtracting Fractions
Adding Fractions With Different Denominators
Adding Real Numbers
Dividing Fractions
Finding the Product of Fractions
Making Predictions With a Graph
Math Problem Solving
Multiplication of Decimals
Multiplying 2 Polynomials
Multiplying Binomials
Multiplying Factorials
Multiplying Fractional Exponents
Multiplying Fractions
Reducing Mixed Numbers
Rounding Decimals
Rounding Fractions
Solving Quadratic Equations
Subtracting 3 Digit Numbers
Subtracting Feet & Inches
Subtracting Fractions From Whole Numbers
Subtracting Percents
Writing Fractions as Percents
Figure Percentages of a Whole Number
Solving Linear Equations for Y
Summary: The quadratic formula is x equals the opposite of b, plus or minus the square root of b squared, minus 4ac all over 2m. Solve mathematical equations using the quadratic formula with tips from a math tutor in this free video on math skills.
Alex Martinez grew up in western Massachusetts and is currently a mechanical engineering student at the University of Massachusetts at Amherst. He is set to graduate in 2009 with a...read more
"Now I'm going to show you how to solve a polynomial using a quadratic formula. The quadratic formula is x equals the opposite of b plus or minus the square root of b squared minus 4ac all over 2m. If I want to solve this equation using the quadratic formula I'd define 3 as a 4 as b and 2 as c. A, b and c represent the coefficients of this equation. To find what x equals I use the quadratic formula. The opposite of b is negative 4 plus or minus the square root of b squared 16 minus 4 times a is 3. C is 2 all over 2 times a which is 3. So to find out the values of x where the function is zero I find this value which is 12 is 24. You need a calculator we can evaluate this function and find the two values using plus and minus of the function that equals zero."
Copyright © 1999-2009 eHow, Inc. Use of this web site constitutes acceptance of the eHow Terms of Use † and Privacy Policy †. en-US Portions of this page are modifications based on work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License. † requires javascript
