Question

multiply and verify your result for x = 1, y = -2, z = -1
i.
$3x {}^{2} y(z {}^{2} - y {}^{2} )$
ii.
$- 4y(2z - 3x)$
Please answer fast, its ergent...
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Answer 1

Answer:

Explained in the image

Step-by-step explanation:

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