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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0