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(x^2-1)^2-2x^2=0
| 13n+7=19 | | -3=6(m-2) | | 13*x=62 | | X^2+2x=288 | | 13/x=62 | | 13÷x=62 | | 3x^2+42x-7=0 | | (2m-3)(m-1)=1 | | z4+z3+5z2+4z+4=0 | | 2x-3(x+2)=2x-1 | | 5*2+9y=15 | | (5+x)/3=(x+7)/5;x=-2 | | 2x4+-x=4x-5 | | X+0.2x=55000 | | 4x²-9x+3=0 | | X+(x×0.2)=55000 | | 0=-5y+22 | | 28-x+(17+3x)=60+2x | | X÷y=50/15= | | 112*x+(28*x/2)=180000 | | n16=2 | | 7m^+2m=10 | | 130*x+(30*x/2)=205000 | | 4x+3x-1=139 | | 24y2+2y-15=0 | | 6x^2+29+35=0 | | 55/11+x=5/3 | | (3x+1)=(2x+-2) | | 2a+19=12a-5 | | 2a+19=12-5a | | 4x+75+3x=180 | | 7a+19=12a-5 |