Calculate. x^3 + 7x^2 + 11x + 5 = 0

Levi Rasmussen

Levi Rasmussen

Answered question

2022-07-26

Calculate. x 3 + 7 x 2 + 11 x + 5 = 0

Answer & Explanation

Coleman Ali

Coleman Ali

Beginner2022-07-27Added 13 answers

x 3 + 7 x 2 + 11 x + 5 = 0
x 3 + x 2 + 6 x 2 + 6 x + 5 x + 5 = 0
x 2 ( x + 1 ) + 6 x ( x + 1 ) + 5 ( x + 1 ) = 0
( x + 1 ) ( x 2 + 6 x + 5 ) = 0
( x + 1 ) ( x 2 + x + 5 x + 5 ) = 0
( x + 1 ) ( x ( x + 1 ) + 5 ( x + 1 ) ) = 0
( x + 1 ) ( x + 1 ) ( x + 5 ) = 0
So, x+1=0 or x+5=0
x=-1 or x=-5

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