-30a^5*b+12a^4b^2+6a^3b^2+10a^3b^2-4a^2b^3-2ab^3
Recognize the differnce of 2 perfect squares
a²-b²=(a-b)(a+b)
so
Answer:
x>1 the bottom graph
Step-by-step explanation:
(18x - 9 > 9) and (2x - 4 > -10)
Do the first inequality first
18x - 9 >9
Add 9 to each side
18x - 9+9 > 9+9
18x> 18
Divide each side by 18
18x/18 > 18/18
x >1
Then the second inequality
(2x - 4 > -10)
Add 4 to each side
2x-4+4>-10+4
2x>-6
Divide each side by 2
2x/2 >-6/2
x>-3
Since this is an and
x>1 and x>-3
We take the more restrictive
x>1
Answer:
angle 1 = 51 degrees
angle 2 = 18 degrees
angle 3 = 123 degrees
angle 4 = 39 degrees
Step-by-step explanation:
angle 2 = 90-72 = 18
angle 3 = 180 - 57 = 123
angle 4 = 180 - 123 - 18 = 39
angle 1 = 90 - 39 = 51