If a is negative for ax^2 + bx + c, will the vertex be minimum or maximum
Maximum
100
What do the letters in F.O.I.L. stand for?
First, Inner, Outer, Last
100
Factor x^2+6x+5
(x+5)(x+1)
100
Factor 12m^2-36m+27
(6m-9)(2m-3)
100
Simply the principal square root of 289
17 squared
200
Write 4(x+1)(x-6) in standard form
4x^2 - 20x - 24
200
Find x: y= ( x - 5 )( x + 3 )
x= 5 : -3
200
Factor x^2-4x-12
(x-6)(x+2)
200
Factor 21x^2-77x-28
(21x-7)(x+4)
200
Simply the principal square root of 279841
529 squared
300
On what intervals are the values of f(x) = -2(x+1)(x-5) positive?
-1,5; -infinity, -1
300
What is the equation to find the axis of symmetry?
-b/2a
300
Solve for m^2=7m
m=7
300
Solve 6r^2-7r-5=0
r=-1/2 or r=5/3
300
3x^2 + 5 = 41. Solve for x
x = plus or minus 2 square root 3
400
y = -0.5x^2 + 3. What is the difference between the two intercepts?
4.898
400
What is the vertex of -1/4( x + 2)^2 + 5?
(-2,5)
400
Solve for x. 14x-49=x^2
x=7
400
Solve n^2-11n+24=0
n=3 or n=8
400
2(x+2)^2 -5 =8. Solve for x
x = -2 plus or minus the square root of 13
500
During practice, a softball pitcher throws a ball whose height can be modeled by the equation h = -16t 2 + 24t +1, where h = height in feet and t = time in seconds. How long does it take for the ball to reach a height of 6 feet?
(source: http://www.regentsprep.org/)
0.25 seconds and 1.25
500
What is the difference between vertex form and intercept form?
Vertex - y=a(x - h)^2 + k, used for determining properties of a graph before you graph it
Intercept- y= a( x - p )( x - q ), used to find x-intercepts
500
Find the zeros of the function f(x)=x^2-12x-45
x=15 or x=-3
500
Solve for x. 2x(5x-2)/2=115
x=5
500
(x^2 / 20) + 8 + 1(4x + 4)^2 - x = 48. Solve for x