Verify that`(3x + 5y)^2 – 30xy = 9x^2 +

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asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

Verify that
`(3x + 5y)^2 – 30xy = 9x^2 + 25y^2`

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Verify that`(3x + 5y)^2 – 30xy = 9x^2 +
Complete the table of products. First monomial → Second monomial ↓ `2x` `-5y` `3x^2` `-4xy` `7x^2 y` `–9x^2 y^2` `2x ` `4x^2` . . . . . . . . . . . . . . . `–5y` . . . . . . `–15x^2 y` . . . . . . . . . `3x^2` . . . . . . . . . . . . . . . `– 4xy` . . . . . . . . . . . . .
Complete the table of products. First monomial → Second monomial ↓ `2x` `-5y` `3x^2` `-4xy` `7x^2 y` `–9x^2 y^2` `2x ` `4x^2` . . . . . . . . . . . . . . . `–5y` . . . . . . `–15x^2 y` . . . . . . . . . `3x^2` . . . . . . . . . . . . . . . `– 4xy` . . . . . . . . . . . . .
Complete the table of products. First monomial → Second monomial ↓ `2x` `-5y` `3x^2` `-4xy` `7x^2 y` `–9x^2 y^2` `2x ` `4x^2` . . . . . . . . . . . . . . . `–5y` . . . . . . `–15x^2 y` . . . . . . . . . `3x^2` . . . . . . . . . . . . . . . `– 4xy` . . . . . . . . . . . . .
Find the areas of rectangles with the following pairs of monomials as their lengths and breadths respectively.`(p, q); (10m, 5n); (20x^2, 5y^2); (4x, 3x^2); (3mn,