`
$\angle $M=90°, dus:
KL2=KM2+ML2102=x2+(x+2)2100=x2+x2+4x+4100=2x2+4x+450=x2+2x+2x2+2x-48=0(x+8)(x-6)=0x=-8 (?) of x=6x=6
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