The expression simplifies to: -7x-4
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2x2-9x+4 = (2x-1)(x-4) when factored
Assuming it's a plus sign, that factors to (2x + 1)(x + 4)
-4x-1-3x-4+5 = -7x-1-2x+1+6 -7x = -9x+6 2x = 6 x = 3
2x squared minus 4
If you mean: 2x2 -9x +4 then it can be factored to (2x-1)(x-4)