Math, asked by zaidfaizan306, 4 months ago

4. If x+y = 9 and xy = 16, then find the value of x² + y².

Answers

Answered by Anonymous

2

Answer:

49

Step-by-step explanation:

Given,

x + y = 9

xy = 16

To find : x² + y² = ?

( x + y )² = x² + y² + 2xy

9² = x² + y² + 2 ( 16 )

81 = x² + y² + 32

x² + y² = 81 - 32

x² + y² = 49

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