Subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz
Solution and Explanation
(5xy – 2yz – 2zx + 10xyz) – (3xy + 5yz – 7zx)
= 5xy – 2yz – 2zx + 10xyz – 3xy – 5yz + 7zx
=5xy – 3xy – 2yz – 5yz – 2zx + 7zx + 10xyz
= 2xy – 7yz + 5zx + 10xyz
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- Complete the following table of products:
First monomial → Second monomial ↓
2x
–5y
3x2
– 4xy
7x 2 y
–9x 2 y 2
2x
4x2
. . .
. . .
. . .
. . .
. . .
–5y
. . .
. . .
-15x2y
. . .
. . .
. . .
3x2
. . .
. . .
. . .
. . .
. . .
. . .
– 4xy
. . .
. . .
. . .
. . .
. . .
. . .
7x 2 y
. . .
. . .
. . .
. . .
. . .
. . .
–9x2 y2
. . .
. . .
. . .
. . .
. . .
. . .
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