algebra_errors

# algebra_errors - -ax a Make sure vou distribute...

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Common Algebraic Errors - Error Reason/Correct/ Justification/Example ............................................................................................................... 3 7 L -#O andkg2 Division by zero is undefined! 0 0 .................................................................................................................... 2 -32 # 9 -3' = -9 , (-3) = 9 Watch parenthesis! .................................................................................................................... 1 A more complex version of the previous + x' # x-~ + x-~ error. .......................................................... ,k+ bx a+bx a bx bx =-+-=I+- ,k #l+bx a a a a Beware of incorrect canceling! ................................................................................................................... -a(x-1) =
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Unformatted text preview: -ax+ a Make sure vou distribute the "-"! .......................................................... &Ta+&+& See previous error. .................................................................................................................... More general versions of previous three (x+a)"# f+a" and =#&+& errors. Square first then distribute! ................................................................................................................... See the previous example. You can not (2x+ 2)2 # 2 (x+ 1)' factor out a constant if there is a power on the parethesis! ................................................................................................................... Now see the previous error. ......................................................................................................................
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