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Q: How do you solve quadratic equations by graphing?

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It does not matter.

No.

Factor it! Set each equal to zero! Solve

By graphing the lines on the coordinated plane they will intersect at (2, -4) which is the solution of the equations

Substitution is a way to solve without graphing, and sometimes there are equations that are impossible or very difficult to graph that are easier to just substitute. Mostly though, it is a way to solve if you have no calculator or cannot use one (for a test or worksheet).

Related questions

Graph the equation then find the x intercepts.

It does not matter.

No.

The Quadratic formula in mathematics is used to solve quadratic equations in algebra. The simplest way to solve these equations is to set each of the factors to zero and then solve each factor separately.

Graphing

1+1=2

Graphically might be the simplest answer.

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.

It is used to solve quadratic equations that cannot be factored. Usually you would factor a quadratic equation, identify the critical values and solve, but when you cannot factor you utilize the quadratic equation.

Because it's part of the quadratic equation formula in finding the roots of a quadratic equation.

A graphing calculator is a more advanced calculator that can plot graphs and solve complex equations. Standard calculators do not have these abilities.

There is no quadratic equation that is 'linear'. There are linear equations and quadratic equations. Linear equations are equations in which the degree of the variable is 1, and quadratic equations are those equations in which the degree of the variable is 2.

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