honey i dont think anyone should go though pain like this
Just subtract the second equation from the first, and you will have the answer. Try to group like terms together while subtracting. ^ means a power.
Here is the process:
9x^3 - 5x^3 + 2x^2 - 5x - (-7x) + 4 - 4
Now, just simplify this by combining like terms. Remember that two negatives make a plus.
4x^3 + 2x^2 + 2x is the answer.
A number line with an open circle denotes > or <
A number line with a closed circle denotes ≥ or ≤
The sign of the inequality will depend on the direction of the arrow
To the right denotes > or ≥
To the left denotes < or ≤
first diagram is x > - 2
The second diagram is x ≥ - 2
The third diagram is x ≤ - 2
The fourth diagram is x < - 2
.. (x +2x)/2 = 120°
.. 3x = 240°
.. x = 80°