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To Find: x^2 + x

Procedure:

Given: 3x - 1 = 11.

Solving, we have

3x - 1 + 1 = 11 +1

3 x = 12

x = 4

Therefore, x^2 + x = 4^2 + 4 = 16 + 4 = 20

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16y ago

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