Question

can someone explain how: m(2d)^2 =4md^2

Answer 1

Because you need to square everything inside the ( )

Answer 2

Because the ^2 isn't just positioned next to "d" but the ( ) surrounding 2d

Answer 3

2^2 = 4
d^2 = d^2
then you get 4md^2...and where you place the 4 doesn't matter as everything is being multiplied..get it?

Answer 4

ohhh i get it! it only squares the 2!

Answer 5

what jaeuni means is
\(m(2d)^2=m\times 2^2 \times d^2\)

Answer 6

no it squares everything inside of ( )...so you're squaring both the 2 and d

which is why the d also becomes d^2

Answer 7

yes thats what i meant, it also squares the d,. Thanks!

Answer 8

np :)