etermine the appropriate rotation formulas to use so that the new equation does not contain any xy-terms. 11x² + 12xy +11y²-7=0 *** Enter the appropriate values to complete the rotation formulas. Use the smallest positive angle of rotation. x=x-yy=x+y' (Simplify your answers, including any radicals. Use integers or fractions for any numbers in the expression. Rationaliz all denominators.) X=

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