What is expand (-0.05+0.25cos(θ))(cos(θ)-1) ?

The solution to expand (-0.05+0.25cos(θ))(cos(θ)-1) is -0.3cos(θ)+0.25cos^2(θ)+0.05

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expand (-0.05+0.25cos(θ))(cos(θ)-1)

expand

(- 0.05 + 0.25 cos (θ)) (cos (θ) - 1)

- 0.3 cos (θ) + 0.25 cos^{2} (θ) + 0.05

Solution steps

(- 0.05 + 0.25 cos (θ)) (cos (θ) - 1)

Apply FOIL method

(- 0.05 + 0.25 cos (θ)) (cos (θ) - 1) : - 0.3 cos (θ) + 0.25 cos^{2} (θ) + 0.05

= - 0.3 cos (θ) + 0.25 cos^{2} (θ) + 0.05

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(sin (θ) + tan (θ))^{2}

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(y + \frac{2}{5}) (12 y^{2} - 12 y^{3})

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What is expand (-0.05+0.25cos(θ))(cos(θ)-1) ?
The solution to expand (-0.05+0.25cos(θ))(cos(θ)-1) is -0.3cos(θ)+0.25cos^2(θ)+0.05