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Quadratic Functions

Power Equations The Null Factor Law The Quadratic Formula worksheet and textbook only Quadratic Functions Factored Form $f\left(x\right)=a\left(x-p\right)\left(x-q\right)$ Factored Form $f\left(x\right)=a\left(x-p\right)^2$ Vertex Form $f\left(x\right)=\left(x-h\right)^2+k$ Completing the Square $x^2+bx+c\rightarrow \left(x-h\right)^2+k$ Vertex Form $f\left(x\right)=a\left(x-h\right)^2+k$ General Form $f\left(x\right)=ax^2+bx+c$ worksheet and textbook only Quadratic Functions and the Discriminant worksheet and textbook only Finding the Equation of a Quadratic Function from a Graph worksheet and textbook only Problems involving Quadratic Functions worksheet and textbook only

Extension Problems

Solve for $𝑥$. If there are multiple answers, separate them with commas. Give answers as fractions and not decimals.

$\frac{3}{10000}x^2-\frac{7}{100}x+4=0$

$\left(x+3\right)^2=\frac{x+3}{2}+3$

$x^2-\left(\sqrt{2}+\sqrt{3}\right)x+\sqrt{6}=0$

$x^2-\left(a-2\right)x-2a=0$ (where $a$ is a constant)

$ax^2-\left(a+b\right)x+b=0$ (where $a$ and $b$ are constants)

$\left(a-1\right)x^2-\left(a^2-1\right)x=0$ (where $a$ is a constant)

The quadratic equation $x^2+2ax-3a=0$ has 2 solutions. One of the solutions is $x=-3$. Find $a$ and the other value of $x$.

$a=$

$x=$

If the quadratic equation $x^2-ax+24=0$ has 2 integer solutions, what is the minimum value of $a$? Assume $a$ is positive.

$a=$

The quadratic equation $x^2+2ax+a^2-4=0$ has 2 solutions. The difference between the two solutions is $4$ and one solution is $5$ times greater than the other solution. Find the value of $a$ and the two values of $x$ (separate them with a comma).

$a=$

$x=$
The graph of the function $f\left(x\right)=2x^2+px+q$ passes through the point $\left(1,3\right)$ and its vertex lies on the line $y=2x-3$.
Find the two sets of values of $p$ and $q$.

$p=$ $, q=$ or $p=$ $, q=$
The graphs of the functions $f\left(x\right)=-2x^2+\left(a+6\right)x-b$ and $g\left(x\right)=3x^2-3\left(b-1\right)x+7a+1$ share the same vertex.
Find the two sets of values of $a$ and $b$.

$a=$ $, b=$ or $a=$ $, b=$
A piece of wire of length $22$cm is cut into two pieces. One piece is bent in to an equilateral triangle and the other piece is bent into a square. Let $A$ be the sum of the areas of triangle and square. Find the length of the sides of the square that gives the minimum value of $A$.

Give your answer to $3$ decimal places: cm
If $x^2-y+2=0$, find the minimum value of $x^2+y^2$.

Point $C$ is on line segment $AB$ so that a square with sides of length $AC$ and an equilateral triangle with sides of length $BC$ is a minimum. Find the value of $\frac{AC}{BC}$ in simplest form.

Find the integer values of $a$ such that $\displaystyle\frac{x^2+x+a−5}{x−1}=a$ has no real root.
*Separate your answers with commas

Equilateral triangle $\triangle ABC$ has sides of length $a$. Points $P,Q$ and $R$ lie on sides $BC,CA$ and $AB$ such that $BP:CQ:AR=1:2:3$.
Find the minimum area of $\triangle PQR$ in terms of $a$.