计算.求-2(10a^2-2ab+3b^2)+3(5a^2-4ab+3b^2)的值,其中a=1,b=-21 求-2(10a^2-2ab+3b^2)+3(5a^2-4ab+3b^2)的值,其中a=1,b=-22 (-32)X(-1/32)-(1/2+2/3-3/4-11/12)X24

问题描述:

计算.求-2(10a^2-2ab+3b^2)+3(5a^2-4ab+3b^2)的值,其中a=1,b=-2
1 求-2(10a^2-2ab+3b^2)+3(5a^2-4ab+3b^2)的值,其中a=1,b=-2
2 (-32)X(-1/32)-(1/2+2/3-3/4-11/12)X24