来自李学儒的问题
(1)解方程x(16x-5)-(4x+1)(4x-1)=112.解不等式2x(x-1)-x(2x-5)
(1)解方程x(16x-5)-(4x+1)(4x-1)=11
2.解不等式2x(x-1)-x(2x-5)
1回答
2020-02-13 18:29
(1)解方程x(16x-5)-(4x+1)(4x-1)=112.解不等式2x(x-1)-x(2x-5)
(1)解方程x(16x-5)-(4x+1)(4x-1)=11
2.解不等式2x(x-1)-x(2x-5)
1)x(16x-5)-(4x+1)(4x-1)=11
16x^2-5x-(16x^2-1)=11
16X^2-5x-16x^2+1=11
-5x=10
x=-2
2)2x(x-1)-x(2x-5)