gabbyalicorn
  • gabbyalicorn
What is the value of 4a^3 – 2b^2 + 5 when a = 3 and b = −2?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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gabbyalicorn
  • gabbyalicorn
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gabbyalicorn
  • gabbyalicorn
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Luigi0210
  • Luigi0210
You have to do the exponents first before multiplying anything else..

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gabbyalicorn
  • gabbyalicorn
Do i subtract the exponents?
Luigi0210
  • Luigi0210
Noo, just do the exponent first, because what you did will give you a totally different answer.. lemme show you what I mean: If we did what you did: \(\large 4*3^3 \) would give \(\large 12^3 \) which is \(\large 1728\) .. As opposed to \(\large 4*(3^3) \) which should be \(\large 4*27 \) which is \(\large 108\)
Luigi0210
  • Luigi0210
See the difference in just the first term?
gabbyalicorn
  • gabbyalicorn
Ah, I see what you did.
gabbyalicorn
  • gabbyalicorn
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Luigi0210
  • Luigi0210
Yes, now just finish multiplying and whatever else you need, you should get the right answer.
anonymous
  • anonymous
https://en.wikipedia.org/wiki/Exponentiation
gabbyalicorn
  • gabbyalicorn
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gabbyalicorn
  • gabbyalicorn
is 105 the answer?
Luigi0210
  • Luigi0210
Yup, should be (:
gabbyalicorn
  • gabbyalicorn
:O :D Thank you for helping me @Luigi0210
Luigi0210
  • Luigi0210
No prob \(\LARGE \color{green}{\star^{\star}} \)

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