anonymous
  • anonymous
Solve: 25x2 − 36 = 0. x = 6, 5 x = −6, −5 x = 36 over 25, x = − 36 over 25 x = 6 over 5, x = − 6 over 5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@Luigi0210
Nnesha
  • Nnesha
difference of squares \[\huge\rm a^2-b^2=(a+b)(a-b)\]
Nnesha
  • Nnesha
take square root of both terms (sqrt of 1st term + sqrt of 2nd term)(sqrt of 1st term - sqrt of 2nd term)

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anonymous
  • anonymous
I am lost
Nnesha
  • Nnesha
here is an example if i have 4 i can write it as 2^2 power right ? so what number to the 2 power = 25
anonymous
  • anonymous
5
Nnesha
  • Nnesha
yes right what about 36 ?
anonymous
  • anonymous
6
Nnesha
  • Nnesha
right so you can write it as \[\huge\rm 5^2x^2-6^2\] which is same as \[\rm a^2-b^2=(a-b)(a+b)\]
Nnesha
  • Nnesha
a is first term and b is 2nd term what is a and b in ur equation ?
anonymous
  • anonymous
a=5^2 and b=6^2
Nnesha
  • Nnesha
not just 5^2 a=5^2x^2 so write it as (a-b)(a+B)
Nnesha
  • Nnesha
ohh wait
Nnesha
  • Nnesha
a= 5x b=6 not squares
Nnesha
  • Nnesha
difference of squares \[\huge\rm\color{reD}{ a}^2-\color{blue}{b}^2=(\color{Red}{a}+\color{blue}{b})(\color{reD}{a}-\color{blue}{b})\]
Nnesha
  • Nnesha
well guess what its easy to take square roots |dw:1441217018547:dw|
anonymous
  • anonymous
Sorry, @Nnesha I had to do something.
Nnesha
  • Nnesha
thats fine
Nnesha
  • Nnesha
let me know what you get :)

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