Remember the following things:
1) multiplying a negative number with a positive will result in a negative answer
2) multiplying a negative number with a negative will result in a positive answer
3) multiplying the same variables will result in a greater 'power'.
So:
2d²(d) = 2d³
11d(d) = 11d²
-4(d) = -4d
-9(2d²) = -18d²
-9(11d) = -99d
-9(-4) = 36
hope this helps
Answer: (2,9)
Step-by-step explanation:
You found it out already but yeah
Answer:
-6x+14<-28
x = x > 7
3x+28<=25
x = x less than or equal to -1
Step-by-step explanation:
Use the formula
a
n
=
a
n
2
+
b
n
+
c
a
n
=
a
n
2
+
b
n
+
c
to identify the quadratic sequence.
a
n
=
n
2
+
6
n
+
9
a
n
=
n
2
+
6
n
+
9
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If P1 has coordinates (x1, y1) and P2 has coordinates (x2, y2), then the distance between the two points is given by [(x1 - x2)2 + (y1 - y2)2]½ or [(x2 - x1)2 + (y2 - y1)2]½ Using the same two points as above, the midpoint formula is M = [(x1 + x2)/2], [(y1 + y2)/2] If we wanted to find the slope of the line on which the two points lie, it would be given by: m = (y1 - y2)/(x1 - x2) or (y2 - y1)/(x2 - x1) Some quadratic equations can be easily factored, some cannot. For those cases we use the Quadratic Formula: If ax2 + bx + c = 0 then x = [-b ± (b2 - 4ac)½]/2a Notice that the Distance, Midpoint and Slope Formulas all refer to linear equations. The quadratic formula, as the name implies, is used to find roots of an equation in which the variable x is squared.