Cross Curricular by lesli Thomas

*Quadratic is an algebra equation, the quadratic equations that help solve the equations. * There are three ways to find the solutions which are factoring, completing the square and the quadratic Formula.

*The names quadratic comes from the word "quad" which means square.

One way to to solve the quadratic is factoring, We use this to find what to multi to make the equation. * An example and the steps to solving by factoring is "x^2 + 5x + 6=0" find out the multiples of 6 and if they add up to 5. Then put them together like this (x +2)(x+3) then you subtract 2 and three from x so it can equal "x=3 and x=2"

quadratic formula.

The next way to complete the quadratics is completing the square. the steps to completing the square are first take the quadratic formula and turn it in to this. Ax^ + Bx + C=0 then turn this into this a(x+d)^2+E=0.

visual demonstration of completing the square.

The quadratic formula in standard form another way is to solve things in math. first you plug in the values of A,B, and C. the equation is 3x^2 + 3x + 4 Like the formula is like always then you put in A,B and C by A=3 B=3 C=4. ( a song to help you remember the formula i x is equal to negative b plus or minus the square root of B squared minus 4 AC all over 2A) if you remember this song then applying the numbers will be easier.

*The standard form is ax^2+bx+c.

How you solve the quadratic formula is in these step. first the equation (x^2 + 3x + 9) * A=1 B=3 c=9

then put these numbers in the format.

then once you have gotten to this point



Created with images by Simon Shek - "Casio fx-50F"

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