A+b=8,ab=4, find a²+b²
Answers
Answered by
0
simple.
a²+b²=(a+b)²-2ab
MUST REMEMBER THIS
THUS
=8²-2*4
=64-8
=56...
hope this helped. mark as brainliest please. ask for any further querries
a²+b²=(a+b)²-2ab
MUST REMEMBER THIS
THUS
=8²-2*4
=64-8
=56...
hope this helped. mark as brainliest please. ask for any further querries
Answered by
2
Squaring on both sides
So
(A+b)²=64
A²+b²+2ab=64
A²+b²+8=64
a²+b²=64-8
A²+b²=56
So
(A+b)²=64
A²+b²+2ab=64
A²+b²+8=64
a²+b²=64-8
A²+b²=56
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