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Mathematics 8 Online
OpenStudy (anonymous):

Please help! Find all solutions to the equation. 7 sin^2x - 14 sin x + 2 = -5

OpenStudy (unklerhaukus):

let z = sin x, z^2 = sin^2 x solve the quadratic

OpenStudy (anonymous):

i did that and got z is 1 but i don't think that's what they're looking for

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