Posted by Esther on Thursday, March 10, 2011 at 11:46pm.
The way the expression is typed is probably different from the book for lack of parentheses. When it is type-set, parentheses are not required on the numerator and denominator. When interpreted on one single line, they are required, or else a completely different expression results.
Also, I think 9p^b at the beginning should read 9p^2 (just a guess).
Please check what I assume is the correct interpretation.
(9p^2)/(p^2-b^2) - (p-b)/(p+b)
=(9p^2)/((p+b)(p-b)) - (p-b)²/((p+b)(p-b))
=(9p^2-(p-b)²)/((p+b)(p-b))
=(3p+p-b)(3p-(p-b))/((p+b)(p-b))
=(4p-b)(2p+b)/((p+b)(p-b))
Related Questions
Algebra 2 - Subtract. Simplify by removing a factor of 1 when possible. (10bf)/(...
Algebra 2 - Subtract. Simplify by removing a factor of 1 when possible. (10bf)/(...
Algebra - 1. Subtract and simplify 18/y-8 - 18/8-y 2. subtract simplify if ...
HELP - subtract simplify by removing factor of 1 if possible 3bc/b^2-c^2-b-c/b+C
algebra - subtract, simplfy by removing a factor of 1 when possible. 19dc/d^2-c^...
Algebra - Simplify by removing the factor of 1 y^2-7y+6/ y^2+8y-9 I need to LCD...
Algebra - 1280v^9y^5/ 100v^4y3 Simplify by removing the factor of 1. Do I look ...
Math - The problem is (14ac)-a^2-2ac+b^2) I need to subtract by removing a ...
math - Needing help with these problems lost, subtract. simplify if possible 3/x...
Algebra 2 - Subtract. Simplify if possible. (2-v)/v-5-(3v-5)/5-v Thank you all ...
For Further Reading
