Precalc0006to0010-page28

Precalc0006to0010-page28 - (Section 0.9: Simplifying...

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(Section 0.9: Simplifying Algebraic Expressions) 0.9.10 PART F: COMMON ERRORS Beware of the following errors when rewriting or simplifying an expression. Errors involving Radicals and Exponents Error (crossed out) Related Correct Formulas Comments a 2 = a a 3 3 = a a () 2 = a , if a ± 0 The formula a 2 = a is often forgotten. ab = a b , if a ± 0 and b ± 0 . a b = a b , if a ± 0 and b > 0 . Do not apply radicals or exponents term-by-term. There is no general formula for the square
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