if a -b=5 and ab=12 find the value of a^2+b^2
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Answered by
5
a - b = 5
Squaring both sides,
(a - b)^2 = 5^2
a^2 + b^2 - 2ab =25
a^2 + b^2 - 2(12) = 25
a^2 + b^2 = 25 + 24 =49
◆Thus, a^2 + b^2 = 49
HOPE IT HELPS..... :-)
Squaring both sides,
(a - b)^2 = 5^2
a^2 + b^2 - 2ab =25
a^2 + b^2 - 2(12) = 25
a^2 + b^2 = 25 + 24 =49
◆Thus, a^2 + b^2 = 49
HOPE IT HELPS..... :-)
Answered by
2
(a-b)^2 = a^2+b^2-2ab
a^2+b^2 = (a-b)^2 + 2ab
a^2+b^2 = (a-b)^2 + 2ab
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