If x * y = (x + 2)^2 (y - 2) then 7 * 5 = ?

Problems based on Numbers Test 5

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x * y = (x + 2)^2 (y - 2)

then

7 * 5 = ?

Solution:

The given expression is

x * y = (x + 2)^2 (y - 2)

x=7

and

y=5

7*5=(7+2)^2(5-2)

=9^2×3=243

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