Question

solve step by step? (4x+2)^2+x^2=40000

Answer 1

You can start by distributing \(\Large (4x+2)^2\)

Answer 2

8x+4

Answer 3

sorry, 16x+4

Answer 4

That's actually a common mistaken made, when you have a squared you don't distribute it, you do this:
\(\Large (4x+2)^2=\Large (4x+2)(4x+2) \)

Answer 5

oh and then you foil!

Answer 6

Exactly :D

Answer 7

i havent done foil in so long, can you help me out? sorry

Answer 8

Sure, when you foil, you multiply each term like so:
Each term gets multiplied once with the other, so for 4x+2:

\(\Large (4x+2)(4x+2) =4x(4x)+4x(2)+2(4x)+2(2)\)