Q22 of 116 Page 6

Express each of the following prducts as a monomials and verify the result in each case for x=1:

Write down the product of 8x2y6 and-20xy verify the product for x=2.5, y=1

-8 × -2 × x2 × x × y6 × y

= 16 × x3 × y7


= 16x3y7


Verification is when, x = 2.5 and y = 1


R.H.S = 16 (2.5)3 × (1)7


= 16 × 15.625


= 250


L.H.S = -8 × 2.52 × 16 × -20 × 1 × 2.5


= 250


Therefore,


L.H.S = R.H.S


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