a + b = 8 and ab = 15 then find the value of a ও b?
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Ab =15 is and a +b=8
Tgerforea=a =5
b=3
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Answer:
a+b=8
a=8-b
ab=15
a=15/b
a=8-b
15/b+b=8
15+b^2/b=8
b^2-8b+15=0
b^2-5b-3b+15=0
b(b-5)-3(b-5)=0
b=5
b=3
ab=15
a×3=15
a=5
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