Math, asked by sheelu1277tu, 1 year ago

factorise x2-23x2+142-120

Answers

Answered by divakar4
1
x3- 23x​2+142x-120
let p(x)=​ x3- 23x​2+142x-120
g(x)=x-1
     0=x-1
     x=1
p(1)=(1)3-23(1)2+142(1)-120
       =1-23+142-120
      =143-143
     =0
Hence x-1 is a factor of ​x3- 23x​2+142x-120
​    
by long division
 
x3- 23x​2+142x-120 = (x-1)(x2+22x+120)
                                =(x-1)(x2+10x+12x+120)
                                =(x-1)(x(x+10) 12(x+10))
                                =(x-1)(x+12)(x+10)
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sheelu1277tu: sorry wrong answer
divakar4: see replace 3 with 2 and then proceed u will get answer
divakar4: PLZ MARK ME AS BRAINLIEST
sheelu1277tu: (x-1)(x-10)(x-12) this is wrong answer
sheelu1277tu: sorry
sheelu1277tu: this is wright answer
divakar4: PLZ MARK ME AS BRAINLIEST
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