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How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2