- How can i make the left side equal to the other? (sinx-cosx) (sinx+cosx)=1-2cos^2x?

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What are the two ways dinoflagellates obtain energy? Describe the structures used for movement.? Find the polynomial equation of the curve that passes through points (-2,0), (0,90), and touches (-3,0).? Iron with a mass of 25 grams is dropped into 100 grams of water. the change in temperature is 72. What is the temp change in the water? What type of particle does a formula unit represent? If the corresponding angles of two triangles are congruent then the two triangles are ? a. congruent
b. equal
c. mirror images
d. similar?

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