清蓝大水多少钱:若a=369b=367试利用368平方=135424计算:a平方=()ab=()要过程
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a^2=(368+1)^2
=368^2+2*368+1
=135424+736+1=136161
ab=(368+1)(368-1)
=368^2-1
=135423
234
a^2=(368+1)^2
=368^2+2*368+1
=135424+736+1=136161
ab=(368+1)(368-1)
=368^2-1
=135423
234