若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是_____.

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 12:39:53
若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是_____.

若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是_____.
若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是_____.

若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是_____.
4x²-6x-3
=2(2x²-3x+1)-5
=2*8-5
=11

若式子2x²-3x+1的值是8,则式子4x²-6x-3的值是11.