anonymous
  • anonymous
Evaluate 2x2 − 5y when x = -3 and y = 4.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Is that 2x^2? (the x is squared)?
anonymous
  • anonymous
-2
anonymous
  • anonymous
yes

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anonymous
  • anonymous
-2 the answer
anonymous
  • anonymous
Assuming it is \[2x ^{2}-5y\] You evaluate as \[(2 \times-3 ^{2}) - (5\times4)\] Which is the same as \[(2 \times-3\times-3) - (5\times4)\] Which is the same as \[(2 \times9) - (5\times4)\]
anonymous
  • anonymous
Yup, you got it MzR, good job.
anonymous
  • anonymous
Which, as has been posted previously, is 18-20=-2
anonymous
  • anonymous
thanks both of u...:)
anonymous
  • anonymous
u there

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