Simple Equations
Simplify (x2)(x5)
x7
Use substitution to find x if x=3y and y=2.
x=6
Does the parabola 4x2+8x-7 open up or down?
up
(8x+9)-(2x+1)
6x+8
x^2-x-12
(x-4)(x+3)
This is Mrs. Rhea's Room Number
(no, you cannot get up and look)
What is 220
(x3)5
x15
In order to use elimination, would we add or subtract these equations to eliminate x?
-8x+y=9
8x+6y=21
add
Identify a, b, and c for -x2+9x-6.
a= -1
b= 9
c= -6
(x+3)(x-3)
x2-9
x2+8x+7
(x+1)(X+7)
This is how many children Mrs. Rhea has
What is 1?
Simplify (9x4y3)2
81x8y6
If we graphed a system of equations and the lines intersected one time, how many solutions exist to this system?
one solution
Solve x2=81 for x using the square root property.
x=9 and x=-9
(2x-5)(3x-7)
6x2-29x+35
x^2-49
(x+7)(x-7)
This is the gender of Mrs. Rhea's child.
What is a boy?
Simplify x5y2/x3y5
x2/y3
How many times would parallel lines cross each other?
zero (no solution to a system of equations)
Solve x2+3x+2=0 by factoring and using the zero product property.
(3x+2)2
9x2+12x+4
x2+2x-35
(x+7)(x-5)
This is the month Mrs. Rhea was born in.
What is January?
Solve: 21 + x = 2(x - 6)
x = 33
Simplify (4x2)3/(2x2)2
16x2
If two lines in a system of equations had different slopes and different y-intercepts, how many solutions to the system would there be?
one solution (one intersection point)
Solve 2x2-3x+1=0 using the quadratic formula.
x=1 and x=1/2
(-3x+7)(2x-5)
-6x2+29x-35
2x2-11x-6
(2x+1)(x-6)
This is Mrs. Rhea's age.
What is 32?