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1 April, 13:52

Subtract the polynomials (7.8x - 3.4y + z) and (-9.2x + 4.8y - 2.1z), then place the answer in the proper location on the grid. Write answer in x-y-z order and include the tenths place.

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  1. 1 April, 16:53
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    Subtracting the polynomials will give us:

    (7.8x-3.4y+z) - (-9.2x+4.8y-2.1z)

    = (7.8x+9.2x) + (-3.4y-4.8y) + (z+2.1z)

    =17x-8.2y+3.1z

    Answer: 17x-8.2y+3.1z
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