ПОЖАЛУЙСТА СРОЧНО НУЖНО
даю 40 баллов!!!
(x+2)⁴-2x²-8x-16=0 Если:(х+2)²=t
(x²+6x)²+8(x²+6x)-9=0 Если:(х²+6х)=t
(x²-16х)²-2(х²-16х)-63=0 Если:(х²-16х)=t​
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