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Because it's part of the quadratic equation formula in finding the roots of a quadratic equation.
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Can all quadratics be solved by completing the square?
Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by factoring, using the square roots or quadratic formula. Solving quadratic equations by completing the square will always work when solving quadratic equations-You can also use division or even simply take a GCF, set the quantities( ) equal to zero, and subtract or add to solve for the variable
What is the quadratic formula for?
The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.
How can you solve quadratic functions by completing the square?
x^2-16x=-15 x^2-16x+(-8)^2=-15+(-8)^2 (x-8)^2=49 (x-8)^2=+-7 8+7=15 8=7=1 The solutions are 15 and 1. You can use the example above to solve quadratic equations by completing the square.
Can you give me an example of a real life situation involving quadratic functions?
Quadratic functions will be used in chemistry in real life. Quadratic equations are used to solve equilibrium problems and determine the amount of reactants in a mixture that will react and the concentrations of products that will be form.
How do you solve equations using square root?
The answer will depend on the exact nature of the equation.
