Divide the following polynomial.
(16x^2 -25) (4x + 5)

Question

Divide the following polynomial.
(16x^2 -25)  (4x + 5)

abdullahm · Answer

Hint: $\sf\Large a^2-b^2 = (a+b)(a-b)$

abdullahm · Answer

I'm assuming your question is

$\sf\LARGE \frac{16x^2-25}{4x+5}$

anonymous · Answer

Yes!

abdullahm · Answer

simplify the numerator using the hint I gave you :)

abdullahm · Answer

if you need more help, look at the denominator and that should move you forward (:

anonymous · Answer

i still dont understand :(

abdullahm · Answer

what is 

$\sf \sqrt{16} = ?$

$\sf \sqrt{25} = ?$

$\sf \sqrt{x^2}=?$

for this last one, hint is: $\sf\Large\sqrt {x} = x ^{\frac{1}{2}}$

jdoe0001 · Answer

$\large {
16x^2 -25\qquad 
\begin{cases}
16\to 4^2\
25\to 5^2
\end{cases}\implies 
\begin{array}{llll}
16x^2 -25\implies 4^2x^2-5^2\
(4x)^2-5^2
\end{array}
\ \quad \
\textit{keep in mind that }
\begin{array}{llll}
\textit{difference of squares}
\
(a-b)(a+b) = a^2-b^2\
a^2-b^2 = (a-b)(a+b)
\end{array}
}$

so.. factor the numerator first, as aforementioned
what factors do you get?