x^2-16x+78=0
2个回答
x²-16x=-78
x²-16x+64=-78+64
(x-8)²=-14
平方小于0不成立
所以分成无解
相关问题
30(X+X+0.2)=78怎么解
x(20-X)=96,〔(x+1)+(x+0.4)〕÷2x=0.78
X-0.48X=0.78
x²+0.7x-0.78=0
4x^2-3x+16=0 x^2-3x+16=0
0.25x4.78x4=0.25x4x4.78=1x4.78用了什么乘法定律
-3X^2+14X-16=0 3X^2-14X+16=0
(1/2)x×(x+1+x+0.4)=0.78解这个方程,
3.6x-x =0.78
78(x-3)-4(3-x)=0