Question

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Answer 1

Answer:

(x-1)(x-10)(x-12)

Step-by-step explanation:

the answer is above

Answer 2

Step-by-step explanation:

we know that if the sum of the coefficient is equal to 0then (x-1)is one of the factores of given polynomial

x-1=0

x=1

put x=1(1)³23(1)²+142(1)-120

=1-23 +142-120

=120-120

=0

therefor (x-1)and (x²-22x+120) (see pic for knowing how (x²-22x+130)is a factor

now factories x²-22x+120

x²-22x+120

X²-12x-10x+120

x(x-12)-10(z-12)

(x-12)(x-10)

Hope it helps........