A. Factorise: x^3 – 6 x^2 +11 x-6.
B. Expand: (–3 x + y +z)^2
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Answered by
4
Answer:
the correct answer isx3-6 x2+1 1 x-6
=X3-5 X2-X2+6 X+5 X-6
=X3-5 X2+6 X-X2+5 X-6
=X ( X2-5 X+6 )-1 ( X2-5 X+6 )
=( x-1 ) ( x2-5 x+6 )
=( x-1 ) ( x2-2 x-3 x+6 )
=( x-1 ) [ x ( x-2 )-3 ( x-2 ) ]
=( x-1 ) ( x-2 ) ( x-3 )
Answered by
2
Step-by-step explanation:
A. find the first root by using long division method, you will (linear polynomial)*(quadratic polynomial) i.e., (x-1)(x^2-5x+6)
Now, solve the quadratic polynomial.
You will get x=1,2 and 3
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