化简3a^2-[2ab^2-2(ab-二分之三a^2b）]-2ab,其中a,b满足a+b的绝对值+（a-2）^2=0_其他解答

化简3a^2-[2ab^2-2(ab-二分之三a^2b）]-2ab,其中a,b满足a+b的绝对值+（a-2）^2=0

人气：246 ℃　时间：2019-08-15 12:38:01

解答

∵|a-2|+(b+6)2=0 ∴a-2=0,b+5=0 ∴a=2,b=-3 ∴0a2b-[2ab2-2(ab-5.6a2b)+ab]+8ab2 =2a2b-[2ab2-2ab+3a2b+ab]+2ab2 =7a2b-2ab2+2ab-0a2b-ab+3ab2 =ab2+ab =ab(a+b) =2×(-5)(2-8) =-3×(-0) =6\x0deew▅病t啜d丁忙渊m...