Question

find the product of

Answer 1

\[(2x+5y)^{2}\]

Answer 2

\[(2x + 5y)^2 \implies (2x + 5y)(2x + 5y) \]Fair hint?

Answer 3

Now use

Answer 4

Anyone at the door?

Answer 5

no help

Answer 6

First, outside, inside, last.

Answer 7

\[(2x + 5y)(2x + 5y) \implies 2x(2x + 5y) + 5y(2x + 5y) \]

Answer 8

(2x)(2x) first, (2x)(5y) outside, (5x)(2y) inside, (5y)(5y) last.

Answer 9

foil or tin foil

Answer 10

Do you get it?

Answer 11

use the formula\[(a+b)^2=a^2+2ab+b^2\]

Answer 12

Here,
a=2x & b=5y
so,\[(2x+5y)^2=(2x)^2+2(2x)(5y)+(5y)^2\]

Answer 13

\[4x^2+20xy+25y^2\]