anonymous
  • anonymous
Subtract and simplify:(3x^2 + 2x - 5) - (4x^2 + 5 - 1) A. x^2 - 3x + 4 B. -x^2 + 7x - 6 C. 7x^2 + 7x - 6 D. -x^2 - 3x - 4 My answer: D so can someone show me how I got it because my teacher wouldn't show me how to get the answer.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
well, this is the easiest of all Maths @Takirap2000. aLL YOU NEED TO DO IS TO SUBTRACT TERMS WITH THE SAME POWERS. For example, 3x^2 4x^2 gave you -x^2, I think you can do the rest. But if D is your answer, I am soo sure that you wanted to write 5x in your second equation. Check it.
anonymous
  • anonymous
but my teacher didn't show me how to get this she just give me the answer and I don't know how to do this.
anonymous
  • anonymous
yes, I am saying subtract terms that have the same powers, 3x^2 - 4x^2 because their power is 2, and 2x-5x because their power is 1 or x is to the power 1, and then the constants 5 -(-1)

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anonymous
  • anonymous
I don't understand I need to see it in equation or draw. the word I don't understand sorry:(
Pawanyadav
  • Pawanyadav
In second expression 5 should be replaced by. 5x. Then solve it you will get the correct answer.
anonymous
  • anonymous
what is 3x^2 -4x^2?
Pawanyadav
  • Pawanyadav
On subtracting (3x^2-4x^2)+(2x-5x)+{-5-(-1)} =-x^2-3x-4
Pawanyadav
  • Pawanyadav
In second expression 5 should be replaced by. 5x. Then solve it you will get the correct answer.
anonymous
  • anonymous
sorry my computer had to reset and shut me down

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