What is the vertex of the following function?
f(x)=(x-4)^2-5
(4,-5)
What is the equation for the axis of symmetry (the x-value of the vertex)?
x=(-b)/(2a)
Factor the following:
x^2-8x-20
(x+2)(x-10)
Factor the following:
x^2-25
(x+5)(x-5)
Simplify the following:
-3sqrt(15)*4sqrt(3)
-36sqrt(5)
What is the axis of symmetry of the following function?
f(x)=2(x+3)^2-9
x = -3
Find the axis of symmetry, vertex, and y-int of the following function:
f(x)=-x^2+4x+5
Axis of symmetry: x=2
Vertex: (2,9)
Y-int: (0,5)
Factor the following:
3x^2+11x+6
(x+3)(3x+2)
Factor the following:
36x^2-49
(6x+7)(6x-7)
Simplify the following:
5/(4-2sqrt(3))
(20+10sqrt(3))/4
Tell whether the following function has a min or max and state the value.
f(x)=-(x+2)^2+7
Max of 7
Find the axis of symmetry, vertex, and y-int of the following function:
f(x)=-1/2x^2+2x-3
Axis of symmetry: x=-2
Vertex: (-2,-5)
Y-int: (0,-3)
DAILY DOUBLE!!!
Factor the following:
6x^2-11x-10
Factor the following (hint: take out the GCF first)
12x^2+38x-14
2(2x+7)(3x-1)
Solve the following equation:
x^2/8+6=10
x=+-4sqrt(2)
Tell whether the following function has a min or max and state the value.
f(x)=3(x-2)^2-12
Min of -12
Tell whether the following function has a minimum or maximum value and state the value.
(Hint: it's the y-value of the vertex)
f(x)=2x^2+8x+7
Minimum Value of -1
Solve the following equation and sketch the graph.
x^2+9x+14=0
x=-2 and x=-7
Factor the following (hint: take out the GCF first)
5x^3+40x^2+75x
5x(x+5)(x+3)
Solve the following equation:
1/5(x+4)^2=10
x=-4+-5sqrt2
Graph the following function and state the vertex and axis of symmetry. Hint: use the 1-3-5 method to graph.
f(x)=2(x-3)^2-4
Vertex: (3,-4)
Axis of symmetry: x=3
Put the following quadratic equation in standard form.
f(x)=(x-3)^2+2
f(x)=x^2-6x+11
Solve the following equation and sketch the graph.
5x^2-28=31x
x=-4/5 and x=7
Find the zeros of the function and sketch the graph.
f(x)=5x^2-15x-270
The zeros are x=9 and x=-6
Solve the following equation:
4(x-6)^2+20=120
x=1, x=11