Please solve the 9th question Q 9 Factorise x2+1x2-7x-1x+8 [Hint: Put x-1x=y] - Maths - Factorisation

Question

Please solve the 9th question
Q 9 Factorise x 2 + 1 x 2 - 7 x - 1 x + 8
[Hint: Put x - 1 x = y ]

Neha Sethi · Accepted Answer

Dear student
x2+1x2-7x-1x+8x-1x2+2×x×1x-7x-1x+8   ∵a-b2=a2+b2-2abx-1x2-7x-1x+10Put x-1x=yy2-7y+10y2-2y-5y+10yy-2-5y-2y-5y-2x-1x-5x-1x-2
Regards

Please solve the 9th question Q.9. Factorise x 2 + 1 x 2 - 7 x - 1 x + 8 . [Hint: Put x - 1 x = y ]