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