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Subtract 
-3c^(2)+12 cd-4d^(2) from 
4c^(2)+3cd+2d^(2). Your answer should be a polynomial in standard form.

Subtract 3c2+12cd4d2 -3 c^{2}+12 c d-4 d^{2} from 4c2+3cd+2d2 4 c^{2}+3 c d+2 d^{2} . Your answer should be a polynomial in standard form.

Full solution

Q. Subtract 3c2+12cd4d2 -3 c^{2}+12 c d-4 d^{2} from 4c2+3cd+2d2 4 c^{2}+3 c d+2 d^{2} . Your answer should be a polynomial in standard form.
  1. Write Polynomials to Subtract: Write down the polynomials that need to be subtracted.\newlineWe have the first polynomial 4c2+3cd+2d24c^2 + 3cd + 2d^2 and we need to subtract the second polynomial 3c2+12cd4d2-3c^2 + 12cd - 4d^2 from it.
  2. Change Signs of Second Polynomial: Change the signs of the second polynomial before subtracting.\newlineTo subtract the second polynomial, we need to change the signs of all its terms and then add it to the first polynomial.\newlineSo, 3c2-3c^2 becomes +3c2+3c^2, 12cd12cd becomes 12cd-12cd, and 4d2-4d^2 becomes +4d2+4d^2.
  3. Add Corresponding Terms: Add the corresponding terms of the resulting polynomials.\newlineNow, we combine like terms from the first polynomial and the sign-changed second polynomial.\newline(4c2+3cd+2d2)+(3c212cd+4d2)(4c^2 + 3cd + 2d^2) + (3c^2 - 12cd + 4d^2)
  4. Perform Addition: Perform the addition.\newlineAdd the c2c^2 terms: 4c2+3c2=7c24c^2 + 3c^2 = 7c^2\newlineAdd the cdcd terms: 3cd12cd=9cd3cd - 12cd = -9cd\newlineAdd the d2d^2 terms: 2d2+4d2=6d22d^2 + 4d^2 = 6d^2
  5. Write Final Answer: Write the final answer in standard form.\newlineThe resulting polynomial in standard form is:\newline7c29cd+6d27c^2 - 9cd + 6d^2

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