If a2+b2+1=2a, then the value of a4+b7 is

If a2+b2+1=2a, then the value of a4+b7 is

If a2+b2+1=2a, then the value of a4+b7 is:

a) 0

b) 1

c) 2

d) 4

Sol:

quantitative aptitude
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