Thursday

October 23, 2014

October 23, 2014

Posted by **Anonymous** on Tuesday, April 15, 2008 at 8:29pm.

My work:

= limit, x -> a, (x^2 + 8ax + 16a^2 - 25a^2) / (x - a)

= limit, x -> a, (x^2 + 8ax - 9a^2) / (x - a)

= limit, x -> a, (x + 8a - 9a^2) / (-a)

= (a + 8a - 9a^2) / (-a)

= 9a^2 - 8a + 1

Textbook Answer: 10a

What did I do wrong, please correct it?

- Calculus; Limits -
**Count Iblis**, Tuesday, April 15, 2008 at 9:53pmMy work:

= limit, x -> a, (x^2 + 8ax + 16a^2 - 25a^2) / (x - a)

= limit, x -> a, (x^2 + 8ax - 9a^2)/

(x - a)

x^2 + 8ax - 9a^2 = (x-a)(x+9a)

Therefore:

(x^2 + 8ax - 9a^2)/(x - a) = (x+9a)

Lim x ---> a of (x+9a) = 10 a

**Answer this Question**

**Related Questions**

Calculus - Our professor wants us to evaluate the limits analytically without ...

calculus verify answer - Evaluate the limit: Limit as x approaches 6 from the ...

Calculus- limits - f(x) = x + 7 if x < or equal to 5 F(x) = 7 if x >5 what...

Calculus. Limits. Check my answers, please! :) - 4. lim (tanx)= x->pi/3 -(...

Calculus - Could someone please help me with these questions;I was having ...

math - perform indicated operations. (a+3)/(5a+25)-(a-1)/(3a+15) (a+3)/5(a+5)-(a...

Calculus - Evaluate the following limit. lim e^(tanx) as x approaches the ...

integral calculus.. - Evaluate the following intergal:- Mvdv , with upper ...

Calculus - Evaluate the limit. The limit as x approaches 0 of (x-sin(x))/(x-tan(...

Evaluating Limits - Evaluate lim x/((x+2)^2 - 4) as x-> 0 or state that the ...