Math, asked by kunalbarve50, 1 month ago

If (a + b) = 13; (a - b) = 9 then a2 – b2
a. 121
b. 117
c. 22
d. none of these

Answers

Answered by mayank8863923323

1

Answer:

Hlo

a - b= 7

ab = 9

(a - b)² = a²+b²-2ab

7²=a²+b²-2×9

49=a²+b²

67=a²+b²

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