Saturday

March 28, 2015

March 28, 2015

Posted by **John** on Tuesday, November 6, 2007 at 5:31pm.

1. x^2-7x+12 / x^2-16 =

(x-3)(x-4) / (x-4)(x+4)

(x-4) cancels out

Answer (x-3)/(x+4)

2. x^2-3x+2/7x-14 divide by x^2-1/7x+7

x^2-3x+2/7x-14 * 7x+7/x^2-1

(x-1)(x-2)7(x+1)/7(x-2)(x-1)(x+1)

To me it looks like everything cancels out, is that possible?

- Algebra -
**drwls**, Tuesday, November 6, 2007 at 7:14pmThe first one is OK

[(x^2-3x+2)/(7x-14)]*[(7x+7)/(x^2-1)]

= [(x-2)(x-1)7(x+1)]/[7(x-2)(x-1)(x+1]

= 1

Looks like that is OK too.

**Answer this Question**

**Related Questions**

Math - Ok so you're supposed to solve the system by method of substitution. And ...

calculus - Difference Quotient of 2x/x-1 2(x+h)/(x+h)-1 - 2x/x-1 all divided by ...

METRICS - I BELEIVE THAT IS WHAT IT IS CALLED. WE ARE STARTING TO GO INTO THIS ...

algbra - i was wondering what did i do wrong in this 10. Divide (3x 2)(x - 4...

Chem. - Convert 512 ft to km. Anyone know how to do this, please? There are 3281...

math, algebra - Problem: A formula for a football player's rushing average r ...

Math - (.050-2/(6.18))/(2/(6.18))*100 I think the answer is 5 because ...

math - how manyyards are in a mile? 1760 I think There are 5,280 feet in a mile...

algebra - (.050 minus 2pie over the square root of 6.18 divided by 2pie over ...

Chemistry - What do I do when writing the net ionic equation for Magnesium ...