Question

2(2a-b)^2+|3-a|/|a+3|=0,求a^2-b的倒数的相反数

Answer 1

2(2a-b)^2+|3-a|/|a+3|=0

2(2a-b)^2=0,|3-a|=0

2a-b=0,a=3

2*3-b=0,a=3

b=6

a^2-b

=3^2-6

=9-6

=3