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EXL IS A WORD.? What is the z-score such that the area under the standard normal curve to the left is 0.56? In Algebra, if an eigenvalue of a matrix A is 3 and 5, what is the eigenvalue of matrix A^(-2)? How do I solve this? -6y=6x^2+24x+36 in finding the equation and vertex of the parabola? What happens in threes ?