sdas123
sdas123 sdas123
  • 04-04-2016
  • Mathematics
contestada

HELPP please in number 19 thank u so much

HELPP please in number 19 thank u so much class=

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SmarticalParticals
SmarticalParticals SmarticalParticals
  • 04-04-2016
Ted's error is that he did not follow proper order of operations... PEMDAS stands for the order in which you approach all problems in math... Parentheses, exponents, multiplication, division, addition, then subtraction.

Ted multiplied the exponents first instead of completing the operations inside the parentheses. The result was that the sign of his base is incorrect. Here is how it should have gone...

[(-a)^2]^4 =
(a^2)^4 =
a^2×4 =
a^8

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