if a-b=7 and ab=9,then asquare +b square=
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Heya!!
_____________________________
a - b = 7 And a × b = 9
Find a² + b²
_____________________________
a - b = 7
SQUARING BOTH SIDE'S
( a - b )² = 7²
=>
a² + b² - 2ab = 49
=>
a² + b² = 49 + 2 ( 9 )
=>
a² + b² = 49 + 18
=>
a² + b² = 67
_____________________________
a - b = 7 And a × b = 9
Find a² + b²
_____________________________
a - b = 7
SQUARING BOTH SIDE'S
( a - b )² = 7²
=>
a² + b² - 2ab = 49
=>
a² + b² = 49 + 2 ( 9 )
=>
a² + b² = 49 + 18
=>
a² + b² = 67
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