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Mathematics Question on Multiplying a Monomial by a Monomial

Complete the following table of products:

First monomial → Second monomial ↓2x–5y3x2– 4xy7x 2 y–9x 2 y 2
2x4x2. . .. . .. . .. . .. . .
–5y. . .. . .-15x2y. . .. . .. . .
3x2. . .. . .. . .. . .. . .. . .
– 4xy. . .. . .. . .. . .. . .. . .
7x 2 y. . .. . .. . .. . .. . .. . .
–9x2 y2. . .. . .. . .. . .. . .. . .
Answer
First monomial → Second monomial ↓2x–5y3x2– 4xy7x 2 y–9x 2 y 2
2x4x2- 10xy6x3- 8x 2 y14x3 y- 18x 3 y 2
–5y- 10xy25 y2-15x2y20xy2- 35x2 y245x2 y3
3x26x3- 15x2 y9x4- 12x3 y21x4 y- 27x4 y 2
– 4xy- 8x 2 y20xy2- 12x3 y16x2 y2- 28x3 y236x3 y3
7x 2 y14x3 y- 35x2 y221x 4 y- 28x3 y249x4 y2- 63x4 y3
–9x2 y2- 18x3 y245 x2 y3- 27x4 y236x3 y3- 63x4 y381x4 y4