Question

Factor this expression as a difference of squares. a^2 + 4a +4 -b^2

Answer 1

(a+2)^2-b^2
(a+2-b)(a+2+b)

Answer 2

brackett come to chat and i will show you the fractions

Answer 3

(a+2)^2-b^2
=(a+2+b)(a+2-b)

use the identity a^2-b^2=(a+b)(a-b)

Answer 4

think there is a mistake here
\[a^2+4a+4=(a+2)^2\]
giving
\[(a+2)^2-b^2\] get
\[(a+2+b)(a+2-b)\] yes?

Answer 5

i find this to be correct sat . i can't find any mistake :)

Answer 6

i'm in chat now sorry it -took a mniute

Answer 7

\[a\div b\]

Answer 8

\[\sum \frac{1}{2^n}\]

Answer 9

\[\sum_{k=1}^\infty (\frac{3}{4})^k\]

Answer 10

\[\dbinom{n}{k}=\frac{n!}{k!(n-k)!}\]

Answer 11

how d'u remember so much stuff? :O too good !

Answer 12

here to learn it basically

Answer 13

i typed what i wrote in chat so you can see it

Answer 14

\[\int_1^{\infty}\frac{1}{x^{\frac{2}{3}}}dx\]

Answer 15

i'm copy pasting everything in my notepad...will learn them soon :)