Question

6.
यदि a+b = 3 तथा ab = 2, तो का मान ज्ञात कीजिए।ए क्यूब प्लस बी क्यूब ​

Answer 1

Answer:

$a {}^{2} + b {}^{2} \\ = (a + b) {}^{2} - 2ab \\ = 3 {}^{2} - 2 \times 2 \\ = 9 - 4 \\ = 5$

formula

$a {}^{2} + b { }^{2} = (a + b) {}^{2} - 2ab$

u can use one more formula

$a {}^{2} + b {}^{2} = (a - b) {}^{2} + 2ab$

Step-by-step explanation:

I hope this is helpful to you

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