Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

    
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,435 questions

17,804 answers

1,438 comments

774,040 users

I need to know if I am right on this question, Find the legal values of b in the fraction.

0 votes

2b^2+3b-10
-----------
b^2-2b-8

asked Mar 13, 2014 in PRE-ALGEBRA by mathgirl Apprentice

1 Answer

0 votes

The fraction image

A numarator is allowed to take on the value of zero in a fraction . Any legal fraction (denominator not equals to zero) with a numarator equal to zero has an overall value of zero.

The legal values is the values that make the  denominator not equals  to zero.

image

image

Now factorise the denominator.

image

image

image

image

image

The legal values of b  in the fractionimage is set of all real numbers except 4 and -2.

answered Apr 5, 2014 by david Expert

Related questions

...