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Find x-intercepts for...
$Factorise by grouping, x^3-2x^2-4x+8=0 x^2(x-2)-4(x-2)=0 (x^2-4)(x-2)=0 (x-2)^2(x+2)=0 x=2,-2- SpiralFlex1
- Post #3
- Forum: Mathematics Advanced
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