Answer:
(3a-1)(3a+1)
Step-by-step explanation:
We can quickly see with this problem that it is the difference of two squares as 9a^2 is (3a)^2 and 1 is 1^2 and therefore can factorise quickly using this rule.
x^2-y^2 = (x-y)(x+y) where x = 3a and y = 1
Step-by-step explanation:
1st picture:
a) Red dots on -5 and 5
b) Red dots on -2 and 2
c) No solution
2nd picture:
8 and -8 because |x| gives the distance between zero to 8
When u got a + in the middle, parenthesis are not needed
3x^2 - 2 + 2x^2 - 6x + 3...now we combine like terms
5x^2 - 6x + 1 <==
Answer: Corporate, preferred, foreign.
Step-by-step explanation:
"Corporate bond-has the lowest default risk because of its good legacy in business. Just try to imagine 150 years of service. They have prove it. preferred stock- because of high number of prospects and the fact the its under development
foreign government bond-has the highest default risk considering that the government is unstable"
