4a的平方+6=3(4a-2),
4a^2+6=12a-6,
4a^2-12a+12=0,
a^2-3a+3=0.
a^2-3a+14=(a^2-3a+3)+11=0+11=11
若4a的平方+6=3(4a-2),则代数式a的平方-3a+14的值是多少?
若4a的平方+6=3(4a-2),则代数式a的平方-3a+14的值是多少?
数学人气:940 ℃时间:2019-10-24 00:51:58
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