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(x-3)(x-8)=0
b)
√2 x(x+2)(x+5)=0
(x-3)(x-8)=0
x²-3x-8x+24=0
x²-11x+24=0
b) x=0 v x=-2 x=-5
2x(x+2)(x+5)=0
2x(x²+2x+5x+10)=0
2x(x²+7x+10)=0
2x³+14x²+20x=0