x(7x²+2x+4)-7(x³-x²+x+2)x= -2Ma wyjśc 28
x(7x²+2x+4)-7(x³-x²+x+2) = -2(7*(-2)²+2*(-2)+4)-7((-2)³-(-2)²+(-2)+2) =
-2(7*4-4+4)-7(-8-4-2+2) = -2*28-7*(-12) = -56+84 = 28
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x(7x²+2x+4)-7(x³-x²+x+2) = -2(7*(-2)²+2*(-2)+4)-7((-2)³-(-2)²+(-2)+2) =
-2(7*4-4+4)-7(-8-4-2+2) = -2*28-7*(-12) = -56+84 = 28