Answer:
Expand the polynomial using the FOIL method.
a
^2
+
a
−
6
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Answer:
Option (b) is correct.
The sum of given expression
is 
Step-by-step explanation:
Given:Expression 
We have to find the sum of the given expression and choose the correct from the given options.
Consider the given expression
.
can be written as 
Also,
can be written as 
Now, the given expression becomes,

.
Now, adding like term, terms having same variable with same degree.
.
Thus, The sum of given expression
is 
Answer:
Step-by-step explanation:
Answer:
98
Step-by-step explanation:
There are 7 sides to this polygon. Forget all the lettering on the figure. Concentrate on the number of triangles you can count. There are 5 of them. Each one has 180 degrees. So the total number of degrees on the interior of the figure is
5 * 180 = 900
All you have to do is add up all the angles including the x and equate them to 900
x + 146 + 122 +142+ 140 + 110 + 142 = 900 Collect the terms on the left.
x + 802 = 900 Subtract 802 from both sides
x = 900 - 802
x = 98