The equation x squared minus 1 x minus 90 is equal to 0 has solutions start set A comma b end set What is A plus b ?

Factor the quadratic: x² − x − 90 = (x − 10)(x + 9) = 0. The solutions are 10 and −9, so A + b = 10 + (−9) = 1. The correct choice is 1.

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