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(3x-5)(x+2)-2(x+1)(2x-3) x=-1 ½
(2*-3,5-3)(-3,5+5)-2(-3,5+3)
(7-3)(1,5)+7-6
5*1,5+1
7,5+1=8,5
(3x-5)(x+2)-2(x+1)(2x-3) x=-1 ½
(3*(-1,5)-5)(-1,5+2)-2(-1,5+1)(2*(-1,5)-3)
(-4,5-5)(0,5)+(2-2)(-3-3)
-9,5*0,5=-4,75