Ok....this week was heptic(probably spelt it wrong but oh well) for me. I basically bombed the test but I do know the reason. One was because I didn't do my best studying which is my fault. Two, I don't understand the rational root theorem. I have problems getting started. I know that P is the constant and i know that Q is the leading coefficient but what is the leading coefficient. Then I understand that you have to do synthetic division but when u have to do it more than once, that confuses me. I don't know what number to use. And tres is because of the way the test is set up. I have problems when there is an equation just saying to solve. I do not know what steps to do at all. So if someone could help me, especially with the rational root theorem, I would be obliged.
I understand the homework that we got today (Monday 31). It is real easy if you know how to decide whether it is an "and" or an "or" equation. If there is something like:
(slashes are absolute value) /x/ < #, then it will be an "and" inequality. You would set it up as -#<> #, then it will be an "or" inequality. It will be set up as x<-# or x>#. Then you solve for x.
What I am having trouble with on the homework is problems like 9 on page 98 where it has x+2/all over 4 - 2-x/all over 3 + 4x-5/all over 6 <4. I do not understand what you do with the 4, 3, and 6 denominators. Something else I am also having trouble with on the homework is # 19 and # 20 on page 98 where it has /x + #/=#. Do you just solve for x or are you supposed to put it into an inequality and get two answers? If anyone can help me, I would be very thankful
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ReplyDeletesorry cupid..i know it's kinda late but here's #12:
ReplyDeleteX + 2/4 - 2-X/3 + 4X - 5/6 < 4
*now you multiply everything by 12 because 12 is the least common denominator..your goal is to get rid of the fractions so when you multiply you should get:
3(x + 2) - 4(2 - x) + 2(4x - 5) < 48
*then you're pretty much solving for x
3x + 6 - 8 + 4x + 8x - 10 < 48
15x - 12 < 48
15x < 60
x < 4
ok for #19 & #20 u're gonna get two answers like the others..but the only difference is that you don't change the = sign..
ReplyDelete#19:
|x - 8|= 4
x - 8 = 4 or x - 8 = -4
x = 12 or x = 4
now you try #20...
NOOO WAYYY! i bombed the last test too!
ReplyDeleteAnd im had problems with everything on the test that you just said you had trouble with too