a+b=9 ab=4 find a2+b2
Answers
Answered by
4
Heya
_______________________________
a + b = 9
SQUARING BOTH SIDE'S
( a + b )² = 9²
=>
a² + b² + 2ab = 81
=>
a² + b² = 81 - 2 ( 4 )
=>
a² + b² = 73
_______________________________
a + b = 9
SQUARING BOTH SIDE'S
( a + b )² = 9²
=>
a² + b² + 2ab = 81
=>
a² + b² = 81 - 2 ( 4 )
=>
a² + b² = 73
jenny4127:
yes or no
Answered by
6
Answer:
Step-by-step explanation:
( a + b )² = 9²
a² + b² + 2ab = 81
a² + b² = 81 - 2 ( 4 )
a² + b² = 73
Similar questions
Science,
6 months ago
Math,
6 months ago
Business Studies,
1 year ago
Physics,
1 year ago
Math,
1 year ago