Question

7. Subtract:
(i) 6x(x – y + z) - 3y(x + y - z) from 2z(-x + y + z)
(ii) 7xy(x2 - 2xy + 3y2) - 8x(xły - 4xy + xy2) from 3y(4x²y - 5xy + 8xy2)​

Answer 1

Answer:

i)

-2xz+2yz+2z² -(6x²-6xy+6xz-3xy-3y²+3yz)

=-2xz+2yz+2z²-6x²+9xy-6xz+3y²-3yz

=-6x²+3y²+2z²+9xy-yz-6xz

Answer 2

Answer:

1. -8zx +5zy +2zSq-6xsq. +3xy -3ysq.

Step-by-step explanation:

(1) 2z(-x + y + z) - 6x(x – y + z) - 3y(x + y - z)

-2zx+2zy+2zSq. -6xsq.+6xy-6xz-3yx-3ysq.+3yz

-8zx +5zy +2zSq-6xsq. +3xy -3ysq...

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sorry didn't find the sq click

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