当X=1时,4-3X=4-3*1=4-3=1
当X=3/4时,4-3X=4-3*3/4=4-4=0
当X=-5/6时,4-3X=4-3*(-5/6)=4+5/2=13/2
当a等于3,b等于-3分之2时,
2ab=2*3*(-2/3)=-4
a^2+2ab+b^2=(a+b)^2=(3-2/3)^2
=(7/3)^2
=49/9
当X=1时,4-3X=4-3*1=4-3=1
当X=3/4时,4-3X=4-3*3/4=4-4=0
当X=-5/6时,4-3X=4-3*(-5/6)=4+5/2=13/2
当a等于3,b等于-3分之2时,
2ab=2*3*(-2/3)=-4
a^2+2ab+b^2=(a+b)^2=(3-2/3)^2
=(7/3)^2
=49/9