if the number X is 3 less than the number Y and the sum of the squares of X and Y is 29 find the product of X and Y
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Answered by
22
Answer:
10
Step-by-step explanation:
x = y - 3
x - y = - 3 ---(1)
x^2 + y^2 = 29 ---(2)
on squaring eq.(1) both sides, we get
x^2 + y^2 - 2xy = 9
-2xy = 9 - 29
-2xy = - 20 => xy = 10
product of x and y = 10
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