If a-b=4 and a+b=6;Find: 1)a^2+b^2 2)ab
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a-b=4
a+b=6 solving so we get a=5
then a-b=4 put 5 at a then5-b=4=>-b=-1=>b=1
(a) a^2+b^2=25+1=256
(b) ab=5×1=5
a+b=6 solving so we get a=5
then a-b=4 put 5 at a then5-b=4=>-b=-1=>b=1
(a) a^2+b^2=25+1=256
(b) ab=5×1=5
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