anonymous
  • anonymous
Plz help :) easy medal Solve for x 16x2 − 81 = 0.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
A. x = 4, 9 B. x = −4, −9 C. x = 9 over 4, x = −9 over 4 D. x = 81 over 16, x = −81 over 16
Nnesha
  • Nnesha
difference of square \[\huge\rm a^2- b^2= (a+b)(a-b)\] take square root of both terms write your answer in two parentheses (square root of first term + sqrt of 2nd term) (sqrt of 1st term - sqrt of 2nd term)
Nnesha
  • Nnesha
and then set both parentheses equal to zero solve for x!

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anonymous
  • anonymous
ty for your help :) @Nnesha
Nnesha
  • Nnesha
my pleasure

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