Ответ:
1)(x-12)(x+12)=2(x-6)²-x²; x²-144=2x²-24x+72-x²;
x²-2x²+x²+24x=144+72; 24x=216; x=216:24; x=9
2)(3x-1)²+(4x+2)²=(5x-1)(5x+1); 9x²-6x+1+16x²+16x+4=25x²-1;
9x²+16x²-25x²-6x+16x=-1-1-4; 6x=6; x=1
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Ответ:
1)(x-12)(x+12)=2(x-6)²-x²; x²-144=2x²-24x+72-x²;
x²-2x²+x²+24x=144+72; 24x=216; x=216:24; x=9
2)(3x-1)²+(4x+2)²=(5x-1)(5x+1); 9x²-6x+1+16x²+16x+4=25x²-1;
9x²+16x²-25x²-6x+16x=-1-1-4; 6x=6; x=1