4(x-1)^2=9(x-5)^2
3个回答
原等式为:
4x^2-8x+4=x^2-10x+25
3x^2+2x-21=0
(x+3)(3x-7)=0
x=-3或x=7/3
相关问题
解方程:(1)5.9X-9=4.2X+25 (2)9(2x-3)-2=5(2x-1)
8x-3=9+5x.5x+2(3x-7)=9-4(2+x).[x−1/4−2x+16=1
5/35 X 4/9 + 4/7 X 6/9 1.2/9 - 2/9 X 3/10 2.5/35 X 4/9 + 4/7
① 4(x-1)^2=9(x-5)^2
X-5/2=2X+1/3=4X+9/5
研究下列算式:4x1x2=3^2-1,4x2x3=5^2-1,4x2x4=7^2-1,4x4x5=9^2-1,4x5x6
9(x-3)(x+4)=(2x-1)(2x+1)+5(x-2)^2
2X-5.1+4.9=1.5X
2(x-2)-3(4x-5)=9(1-x)
解方程题1. 15-3Y=9 2. 7X=5X+16 3. 2.4X-9.8=1.4X-9 4. 5X+4+2x=3X=