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7-30.
  1. Greta is trying to solve x − 3 = −2. She decides to simplify the problem by letting u =. Homework Help ✎

    1. Rewrite Greta's equation using u, then solve for u.

    2. Suppose x = 5, what would u be?

u2 − 3u = −2
Solve for u.

If u = 2 and u = 1, what is x?

Refer to the given information.