Question: In Exercises 1 and 2, let p(x) = 1 - 2x, q(x) = x - x2, and r(x) = - 2 + 3x + x2.

In Exercises 1 and 2, let p(x) = 1 - 2x, q(x) = x - x2, and r(x) = - 2 + 3x + x2. Determine whether s(x) is in span(p(x), q(x), r(x)).
1. s(x) = 3 - 5x - x2
2. s(x) = 1 + x + x2

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