1.

Find two numbers whose sum is 6 and product is 9.

Answer»

’First number = x

Second number = 6 – x

x ( 6 – x ) = 9

6x – x2 = 9

0 = 9 – 6x + x2

x2 – 6x + 9 = 0

(x – 3)2 = 0

(x – 3 ) (x – 3) = 0

x = 3

Numbers are 3, 3.



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