(2a²﹣2/3a﹣4/9)(-9a)=?
2个回答
=2a²×(-9a)-2/3a×(-9a)-4/9×(-9a)
=-18a³+6a²+4a
相关问题
(2a^2-2/3a-4/9)(-9a)
a1a2=4 a2=4 a1a2a3=9 a3=9/4 a1a2a3a4=16 a4=16/9 a1a2a3a4a5=2
a3/2=4/9,(a>9),则log2/3a=?
(4a^3-12a^2b^2 9ab^3)/(4a^2-9b^2)
(a^2-6a+9)/(4-b^2)÷(3-a)/(2+b)*(a^2)/3a-9
计算:(1)a2a+3−9a+3(2)[2a−4a2+6a+9÷a−2/a+3•(a+3)
{4a+2b+c=3 9a+3b+c=2 9a
(3a^2-2/3a-4/9)(-3a)
(2a的平方-2/3a-4/9)乘以(-9a)
9/a^4+(5a^2-9)^2/16a^4=1,是怎么整理得:9a^4-90a^2+225=(3a^2-15)^2=0