5x2^6-6x2^4+1/4x2^7过程
1个回答
5x2^6-6x2^4+1/4x2^7
=2^4(5x2^2-6+1/4x2^3)
=16x(5x4-6+1/4x8)
=16x(20-6+2)
=16x16
=256
相关问题
解方程.(1)6.7-6X=2.5(2)2.5+7X=4.6(3)9X+X=25(4)4(x+1.1)=12.4.
-3x-6=-6 3x-5=6x+7 4(2x-1)=4-2(x-6)
7.6-6.2x+4x=3.2 18.24-2.5(x+4)=1.5x 4.08-2(x+0.6)=1.2x
因式分解:(1)x^2-7x+6(2)x^2-5x+6(3)x^2-5x-6(4)x^2-7x+8(5)x^2-7x+1
(4.8x7.5x6.3)/(2.4x2.5x2.1) 怎么简便计算要过程
解方程:5x-2=3.6;7(x-1.2)=2.1;7.5×8-4x=20;9.6x-2.4x=21.6;4x-7×1.
1/4x-1/2=3/4;7x-5/4=3/8;2x-1/6=5x+1/8;1/2x-7=9x-2/6;1/5x-1/2
解方程 2.8x4-5x=5.8 1.6x+2.4=7.2 3.4x-6=4.2 7.8x+5=44
2/(2x-3)+6/(6x+7)=1/(x+1)+3/(3x-4)求过程
因式分解(1)6x2-7x-5; (2)x2+4x-4;