Question

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$( {x}^{2} + 2x)( {x}^{2} + 2x - 1) - 20$

Answer 1

heya answer is here.........

♧Equation at the end of step  1  : ((((x4)+(4•(x3)))+3x2)-2x)-20 = 0

Step  2  : Equation at the end of step  2  : ((((x4) + 22x3) + 3x2) - 2x) - 20 = 0 .

♧ The factor(s) are: 

of the Leading Coefficient :  1
 of the Trailing Constant :  1 ,2 ,4 ,5 ,10 ,20 .


♧In search of an interavl at which the polynomial changes sign, from negative to positive or the other wayaround.

Method of search: Calculate polynomial values for all integer points between x=-20 and x=+20 

Found change of sign between x= -4.00 and x= -3.00.



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Answer 2

Answer:

♧Equation at the end of step  1  : ((((x4)+(4•(x3)))+3x2)-2x)-20 = 0

Step  2  : Equation at the end of step  2  : ((((x4) + 22x3) + 3x2) - 2x) - 20 = 0 .

♧ The factor(s) are: 

of the Leading Coefficient :  1

 of the Trailing Constant :  1 ,2 ,4 ,5 ,10 ,20 .

♧In search of an interavl at which the polynomial changes sign, from negative to positive or the other wayaround.

Method of search: Calculate polynomial values for all integer points between x=-20 and x=+20 

Found change of sign between x= -4.00 and x= -3.00.