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(x+4)(x+4) <=(2x-6)(2x-6)
x^2+8x+16 <=4x^2-24x+36
-3x^2+32x-20<=0
3x^2-32+20>=0
3x^2-30x-2x+20>=0
(3x-2) (x-10)
3x-2=0.... x=10
3x=2
x=2/3
HP={X>=10 V X<=2/3}