Math, asked by yukipanda125, 5 hours ago

if ( a + b ) = 5, a² + b² = 6, find ab.​

Answers

Answered by lalnunkimahmarjoute
0

a + b = 5

squaring both sides,

a² + 2ab + b² = 25

a² + b² + 2ab = 25

Putting a² + b² = 6,

6 + 2ab = 25

2ab = 25 - 6

2ab = 19

∴ab = 19/2

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