Math, asked by gang75371, 1 day ago

a) If a + b = 9 and ab = 18; find: 1) a - b 2) ए स्क्वायर माइनस बी स्क्वायर ​

Answers

Answered by rishikeshsharma7028
1

Answer:

(a+b)²=a²+b²+2ab

9²=a²+b²+2×18

81-36=a²+b²

a²+b²=45

(a-b)²=a²+b²-2ab

45-2×18=45-36=9

a-b=3

a²-b²=(a+b)(a-b)

9×3=27

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