Q2. If a - b = 5 and ab = 12, find the value of a² + b²?.
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Answer:
1
Step-by-step explanation:
given:-a-b= 5
ab =12
according to question,
a-b= 5
(a-b)^2=(5) ^2 (squaring both sides)
a^2+b^2-2ab=25
a^2+b^2=25-2ab
a^2+b^2=25-2×12 (ab =12 given)
a^2+b^2=25-24
=1
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