find two numbers a and b such that ab=36 and a-b=5
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A. T. Q
ab=36 and a-b=5
these are the two equation given
a-b=5
=> a=5+b ...........(1)
ab=36
put equation 1
=>5+b*b=36
=> b²+5b =36
=> b²+5b -36=0
=>b²+9b-4b-36=0
=>b(b+9)-4(b+9)=0
=>(b-4)(b+9)
=>b= 4 or -9
if b =4
then a=5+b
a=9
and if b =-9
than a=5+b
a=5-9
a=-4
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