Q. 264.7( 3 Votes )
Express each of the following prducts as a monomials and verify the result in each case for x=1:
Evaluate 
for x = 2.5 and y=1.
Answer :
-8 × - 20 × x2 × x × y6 × y
= 160x3y7
Verify:
When, x = 2.5 and y = 1
R.H.S = 160x3y7
= 160 × (2.5)3 × (1)7
= 2500
L.H.S = - 8 × 2.52 × 1 × -20 × 1 × 2.5
= 2500
Therefore,
L.H.S = R.H.S
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