if 2a -9 =b+a , than value of |a-b| +|b-a|
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2a-9=b+a
=>2a-a=b+9
=>a=b+9
Now, |a-b|+|b-a|
=√a²+b²+√b²+a²
=√(b+9)²+b²+√b²+(b+9)²
=b+9+b+b+b+9
=4b+18
=>2a-a=b+9
=>a=b+9
Now, |a-b|+|b-a|
=√a²+b²+√b²+a²
=√(b+9)²+b²+√b²+(b+9)²
=b+9+b+b+b+9
=4b+18
avs2:
wrong
answer is 9
wait dn
sorry answer is 18
is it b=18
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