Polynomials
Simplify.
(3x2 + 2x) + (5x2 - x)
8x2 + x
x + 9 = 15
x = 6
What is the slope of a line passing through (2,3) and (6,11)?
2
What is the formula for the area of a triangle?
A = 1/2(b)(h)
Multiply: (x + 4)(x - 2)
x2 + 2x - 8
3x = 27
x = 9
Write the equation of a line with slope 3 and y-intercept -4.
y = 3x - 4
A circle has a radius of 6. What is its circumference? Express in terms of pi.
What is 12pi?
Factor: (x2 - 16)
(x - 4)(x + 4)
2x - 7 = 15
x = 11
What is the slope of the line 2x + 5y = 10?
-2/5
A rectangular prism has length 4, width 3, and height 5. What is its volume?
60 cubic units
What is the degree of the polynomial 7x5 - 2x3 + 9?
5
Solve the system:
x + y = 10
x - y = 2
x = 6; y = 4
Find the equation of the line through (1,2 and (4, 8).
y = 2x
A right triangle has legs of 8 and 15. What is the hypotenuse?
What is 17?
Factor completely: (2x2 + 7x + 3)
(2x + 1)(x + 3)
A number is multiplied by 5 and then decreased by 12 to get 28. What is the number?
8
Are the lines y = 4x + 1 and y = -1/4x + 7 parallel, perpendicular, or neither?
What is perpendicular?
The area of a circle is 49pi. What is the radius?
7