Question

Simplify. (5√2 - 1)^2

Answer 1

\[(5\sqrt{2}-1)^2\]is it your question ?
or \[(5\sqrt{2-1})^2\]

Answer 2

yup

Answer 3

which one ?

Answer 4

the second one

Answer 5

no the first one sorry

Answer 6

okay \[(5\sqrt{2}-1)^2\] is same as
\[(5 \sqrt{2} -1)(5 \sqrt{2} -1)\]
do you know foil method ?

Answer 7

No

Answer 8

can you teach me?

Answer 9

sure!
foil method when you multiply everything which is in first parentheses by 2nd parentheses