Wednesday

August 20, 2014

August 20, 2014

Posted by **Sara** on Monday, June 13, 2011 at 9:31pm.

Simplify the following:

3xy^2 4xz

______ + ______ = 7xyz

2y 3x _____

5

2(x-1) 3(x^2-4)

______ * ________ = 6(x-2)

4(x+2) 5x-5 ______

20

x^2-x-6 3(x^2-4)

________ / __________ = (x-3) (x+5)

7x+7 x^2+6x+5 ______________

21(x-2)

- Math -
**Reiny**, Monday, June 13, 2011 at 10:10pmWow, did you look how your typing showed up ??

I will take a "guess" what the last one is ....

(x^2 - x - 6)/(7x+7) ÷ 3(x^2-4)/(x^2+6x+5) = (x-3)(x+5)/(21(x-2))

(x-3)(x+2)/(7(x+1)) (x+1)(x+5)/(3(x+2)(x-2)) = (x-3)(x+5)/(21(x-2))

(x-3)(x+5)/(21(x-2) = (x-3)(x+5)/(21(x-2))

everything cancels for

1 = 1

so the equation is an identity and true for all values of x, except x ≠ -1, ± 2,

retype the others using brackets.

- Math -
**Sara**, Monday, June 13, 2011 at 11:06pm1)

(3xy^2)/(2y) + (4xz)/(3x)

2)

(2(x-1))/(4(x+2)) *(3(x^2-4))/(5x-5)

**Related Questions**

chemistry - Balance these nuclear equations. Can some please help I dont ...

spanish - Yo ______ lavo ______ manos y ______ cara. ______ cepillo ______ ...

social studies - the appalachian mountain extend north from the united states ...

geometry - prove: the segment joining the midpoints of the two sides of a ...

Physics/Math - For the vectors a = (3.9 m)i + (4.8 m)j, and b = (5.4 m)i - (2.0 ...

economics - Complete the following table for the firm below which is selling its...

Calculus Please Help - A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and...

Chemistry - For a solution of 3.3 M H2CO3 (Ka = 4.4 × 10-7), calculate: (a) [H...

english - The poor woman had some _______(happy) days. Hari is the _____ (idle) ...

B - For a solution of 3.3 M H2CO3 (Ka = 4.4 × 10-7), calculate: (a) [H+] ____?...