Precalc0011to0016-page10

Precalc0011to0016-page10 - (Section 0.11: Solving...

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(Section 0.11: Solving Equations) 0.11.10 We must check our tentative solutions. x = 5 checks out: 5 () + 4 = 5 2 + 5 ± 21 TIP 3 : If we trust that we have not made any mechanical errors, we only need to check that radicands of even roots are nonnegative
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