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anonymous

  • one year ago

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.

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  1. anonymous
    • one year ago
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    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.

  2. anonymous
    • one year ago
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    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.

  3. anonymous
    • one year ago
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    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)

  4. anonymous
    • one year ago
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    I don't understand I need to see it in equation or draw. the word I don't understand sorry:(

  5. Pawanyadav
    • one year ago
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    In second expression 5 should be replaced by. 5x. Then solve it you will get the correct answer.

  6. anonymous
    • one year ago
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    what is 3x^2 -4x^2?

  7. Pawanyadav
    • one year ago
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    On subtracting (3x^2-4x^2)+(2x-5x)+{-5-(-1)} =-x^2-3x-4

  8. Pawanyadav
    • one year ago
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    In second expression 5 should be replaced by. 5x. Then solve it you will get the correct answer.

  9. anonymous
    • one year ago
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    sorry my computer had to reset and shut me down

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