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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.

Respuesta :

CastleRook
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
lublana

Answer:

[tex]17.0x-8.2y+3.1z[/tex]

Step-by-step explanation:

We are given that two polynomials

(7.8x-3.4y+z) and (-9.2x+4.8y-2.1z)[/tex]

We have to subtract the polynomials.

[tex](7.8x-3.4y+z)-(-9.2x+4.8xy-2.1z)[/tex]

Open the bracket

[tex]7.8x-3.4y+z+9.2x-4.8y+2.1z[/tex]

Rearrange the terms

[tex](7.8x+9.2x)-(3.4y+4.8y)+(z+2.1z)[/tex]

Combine like terms

[tex]17.0x-8.2y+3.1z[/tex]

Hence, the answer is given  by

[tex]17.0x-8.2y+3.1z[/tex]

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