Answer:
9b + 99
Step-by-step explanation:
You have already seen what the example had done.
First multiply (factorize) 9 to both variables inside the parentheses.
9 · b = 9b
9 · 4 = 36
Now remember to not change the sign in the parentheses
9b + 36 + 63
You can now add 63 and 36 together.
63 + 36 = 99
So,
9b + 99
It is still "plus" sign because the number 99 is a positive.
Answer:
Step-by-step explanation:
x
2
+
x
−
6
=
(
x
+
3
)
(
x
−
2
)
x
2
−
3
x
−
4
=
(
x
−
4
)
(
x
+
1
)
Each of the linear factors occurs precisely once, so the sign of the given rational expression will change at each of the points where one of the linear factors is zero. That is at:
x
=
−
3
,
−
1
,
2
,
4
Note that when
x
is large, the
x
2
terms will dominate the values of the numerator and denominator, making both positive.
Hence the sign of the value of the rational expression in each of the intervals
(
−
∞
,
−
3
)
,
(
−
3
,
−
1
)
,
(
−
1
,
2
)
,
(
2
,
4
)
and
(
4
,
∞
)
follows the pattern
+
−
+
−
+
. Hence the intervals
(
−
3
,
−
1
)
and
(
2
,
4
)
are both part of the solution set.
When
x
=
−
1
or
x
=
4
, the denominator is zero so the rational expression is undefined. Since the numerator is non-zero at those values, the function will have vertical asymptotes at those points (and not satisfy the inequality).
When
x
=
−
3
or
x
=
2
, the numerator is zero and the denominator is non-zero. So the function will be zero and satisfy the inequality at those points.
Hence the solution is:
x
∈
[
−
3
,
−
1
)
∪
[
2
,
4
)
graph{(x^2+x-6)/(x^2-3x-4) [-10, 10, -5, 5]}
The answer is C, because those are the points that cross the x-axis.
Answer: The answer should be 35
Step-by-step explanation: If you take 140 divide it by 4 it should be the answer
Answer:
Step-by-step explanation:
the sources of family income can be classified as to regular income which includes________and irregular income such as________?