Question

Subtract the following
${8x}^{2} - 2y + 3z \: from \: {4x}^{2} + 2y - 4z$
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Answer 1

4x^2 + 2y - 4z

8x^2 - 2y + 3z

(-) (+) (-)

- 4x^2 + 4y - 7z

Answer: -4x^2 + 4y - 7z