Question

How do you simplify the expression `4sinxcosx-2sinx`?

Answer 1

see below

Explanation:

`4 sin x cos x-2sinx`

`=2sinx(cosx-1)`

or

`4 sin x cos x-2sinx`

`=2(2sinxcosx)-2sinx`

`=2sin2x-2sinx`