Math, asked by afrin136, 8 hours ago

if a+b =12 and ab=9 then a² + b² = ???​

Answers

Answered by anjalikumari3157
0

Answer:

we get a2+b2-2ab=49

Now since ab=9

=> a2+b2-2*9=49

=> a2+b2=49+18=67 ans

Step-by-step explanation:

Answered by amannscharlie
2

Given:

a + b = 12

ab = 9

Solution:

(a + b)² = a² + 2ab + b²

12² = a² + 2 × 9 + b²

144 = a² + 18 + b²

144 - 18 = a² + b²

a² + b² = 126 ,, is Answer

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