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Factorization x2-2x-8 |
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Answer» X= -2,4 is the answer X2-2x-8By spliting the middle termSo,x*8=88 can be splitted as -4*2-4x+2x=-2xX2+2x-4x-8=0X(x+2)-4(x+2)=0(X+2)(x-4)=0(X+2)=0X=-2(X-4)=0X=4Therefore x=-2,4 x= -2,4 x2-2x-8 :By splitting methodx2-4x+2x-8 x(x-4)+2(x-4) (x-4)(x+2). x2+2x-8=0x2+4x-2x-8=0\xa0x(x+4)-2(x+4)=0(x-2) (x+4)=0\xa0x=2 or x= -4 |
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