Question

If a + b =5 and ab = 12, then a^(2) + b^(2) = ?

- 49

49

1

- 1​

Answer 1

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Here we go:-

Given:-

a-b=5

ab =12

To find:- a²+ b²

......

(a-b)²= a²+b²-2ab

=> (5)²= a²+b² - 2*12

=>25+24= a²+ b ²

...So. a²+b²= 49

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Đíví❤

Answer 2

Here we go:-

Given:-

a-b=5

ab =12

To find:- a²+ b²

......

(a-b)²= a²+b²-2ab

=> (5)²= a²+b² - 2*12

=>25+24= a²+ b ²

...So. a²+b²= 49