Question

Help! Please!
Find all solutions to the equation.

sin^2 x + sin x = 0

Answer 1

Pull out the common thingy like this
4 + 2 = 0
2(2+1) = 0

Answer 2

Im confused

Answer 3

sinx(sinx + 1) = 0

Answer 4

chaguanas's example showed squared and and un-squared values

4 + 2 =
is
2^2 + 2 =
so factoring out the common "thingy"
2 (2+1) =

sin^2x and sin x

so factor out sinx, like christiangeek did for you.

Answer 5

When two things multiplied together equal zero, the only way for that to be possible is if one (or both) of them are zero. So sinx(sins + 1) will only be zero when sinx is zero or sins +1 is zero.

Answer 6

(Sorry, my stupid computer keeps autocorrecting sinx to sins!

Answer 7

You handle is "christian" geek.

Answer 8

Ironic, isn't it?!

Answer 9

yeah, so what do I do in order to solve this problem?

Answer 10

you first factor out the common "thingy" sin x, giving you:

sin x (sin x + 1) = 0

Then as Christiangeek explained. one of the factors has to be zero so that they equal zero when multiplied.

One or both of the following has to be true:

sin x = 0
sin x + 1 = 0

Solve each for x and those are your solutions.

Answer 11

oh, i get it thanks!