Ответы на вопрос:
64-(4-5x)(4+5x)² =64-(16-25x²)(4+5x)=64-(84-100x²+80x-125x³)= =64-84+100x²-80x+125x³=125x³+100x²-80x-20 125*(-0.2)³ +100*(-0.2)² -80*(-0.2)-20= =125*(-0.008) +100*0.04 +16-20= = -1 + 4 - 4= -1
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