Question

perform the indicated operation :
(4x-9)^2

Answer 1

(4x-9)(4x-9)
4x*4x+4x*-9+-9*4x+-9*-9
\[16x ^{2}-72x+81\]

Answer 2

4x -9
4x -9
----------
16x^2 -36x
-36x + 81
-----------------
16x^2 -72x +81

Answer 3

using the formula
\[(a-b)^{2} = a ^{2} - 2ab + b ^{2}\]
we get
(4x)^2 - 2(4x)(9) + (9)^2
16x^2 - 72x + 81

Answer 4

thanks guys!!!

Answer 5

lol .... using the formula we get:

a -b
a -b
-------
a^2 -ab
-ab +b^2
-------------
a^2 -2ab +b^2 :)

Answer 6

Well!!!

After all, ALL ROUTES LEAD TO GOD!!! ( I mean the right routes!!!!)

Answer 7

yep