anonymous
  • anonymous
please help! Explain, in complete sentences, how you would factor 27x4 – 90x2 + 75. Provide the factors
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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cwrw238
  • cwrw238
notice that 27, 90 and 75 are all divisible by 3 so we can write 3(9x^4 - 30x^2 + 25) now you can try to factor whats in parentheses
cwrw238
  • cwrw238
we must now look for 4 numbers which are factors of 9 and 25 which give us a product of 25 and when multiplied and added give us the middle number -30 to give factors of the form (ax^2 + b)(cx^2 + d)
anonymous
  • anonymous
3(3x^2-5)(3x^2-5)

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anonymous
  • anonymous
is that right?
cwrw238
  • cwrw238
I do this by trial and error - yeah - thats right - why are you asking?!!
anonymous
  • anonymous
sorry i was just making sure o.O
eyust707
  • eyust707
great job!
cwrw238
  • cwrw238
thats ok - thats as far as you can go 3x^ -5 won't factor
anonymous
  • anonymous
thank you eyust & ohhh okay thanks & you're a little fiesty lolol
anonymous
  • anonymous
eyust you never answer my last question on the other problem
cwrw238
  • cwrw238
yeah - good luck

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