April 6, AIM: How do we solve algebraic solutions? II
MIDTERM ON MONDAY APRIL 10
Homework:
Todays lesson: Read pp 715-716
Do: preparation sheet: pp 3, 4 all problems
Handout: Enrichment exercise Parts 1-5
Extra Credit: 3 points. Post correct assigned midterm prep sheet problem to todays comment section on this post or on the board tomorrow. All steps in arriving at a solution must be shown for credit.
Todays lesson Review:http://www.regentsprep.org/Regents/math/fractions/Fequations.htm
Todays practice enrichment exercises: http://www.regentsprep.org/Regents/math/fractions/Penrich.htm
posted by Mr.Napoli @ 7:43 PM
10 Comments:
this is from sahir rizvi
8. 2a/3 - a/4
the lcd is 12
8a/12 - 3a/12 = 5a/12 answer
Hi Mr. Napoli, sorry this is kind of late, because I forgot to post this yesterday, and I have it today posted. Kinda late *rolls eyes* but this is how you do #6.
x3 + 5x + 6x =
(x2 + 3x)(x + 2) =
x3 + 2x2 + 3x2 + 6x =
x(x + 3)(x+2)
The x2 is X Squared. And x3 is X Cubed. Because computers wont show that, unless it is a specific program.
FATIMA BAZZI
31) Xsquared-2x-15=0
(x-5)(x+3)
x-5=0 x+3= 0
+5 +5 -3 -3
x=5 x = -3
ANSWER- (2) 5,-3
This is from Navneet Singh:
pgs 1-2
9. LCD=15 a/3 + 2a/5
5(a)/5(3) + 3(2a)/3(5)=
5a/15 + 6a/15 = 11a/15
11a/15 is the answer
this is from navneet singh
pgs 3-4
Q: If 0.00037 is expressed as
3.7 x 10 to the power of n,
what is the value of n???
A: 0.00037
-------->
negative value because we are moving the decimal to the right.
0.00037
- - - - <--- 4 spaces to the right
answer is n = -4
CHECK: 3.7 X 10 TO THE PWR OF -4 = = = = O.OOO37
Mr. Napoli This is Tiquan again I cant make a fraction on the computer so Ill do # 2 if you cant understand #10.
2.Factor: x squared - y squared
(x+y) (x-y)
check: x.x=x squared
y.-y=-y squared
hello mr.napoli it is jonathan kramer.. i am ganna do #16
express 5a/6 - 4a/9 as a single fraction in simplest form.
5a/6 - 4a/9
15a/18 - 8a/18 = 7a/18
thank you jonathan
Polina Aronova
#2
(x-y)x+y)
check: x-y
x+y
------
X2-Y2
im kinda late but here is my problem #4(Factor Completely) x^2+5x-24
1.Ok first you find the GCF which there is none.
2.Then you look for the diffrence of perfect squares which there are none.
3.Then you look for factors of -24 that will equal +5x
4.Factors of -24 that will equal to +5x are 8 times -3.
5. Now you make to seperate equations since you have a x^2 so (x+8)(x-3) and thats the answer
christiane yambao pd.8 #9
sorry this is late.....
express as a single fraction in simplest form: a/3 + 2a/5
1) lcd:15
(5)a/3=5a/15
(3)2a/5=6a/15
5a/15 + 6a/15=11a/15
11a/15 is the answer
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