If The Sum And The Difference Of Two Numbers Are 20 And 8 Respectivel – InterviewSolution

1.

If The Sum And The Difference Of Two Numbers Are 20 And 8 Respectively, Then The Difference Of Their Square Is?

Answer»

LET the numbers be x and y.

Then, x + y = 20 and x - y = 8.

Therefore, x2 - Y2 = (x + y)(x - y)

‹=› 20 x 8

‹=› 160.

Let the numbers be x and y.

Then, x + y = 20 and x - y = 8.

Therefore, x2 - y2 = (x + y)(x - y)

‹=› 20 x 8

‹=› 160.

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