Question

find x^2 +2x+1 roots​

Answer 1

Answer:

(x² +2x +1)

= x² +x +x +1

= x( x +1) +1( x +1)

= (x +1)(x +1)

= (x +1)²

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Answer 2

Step-by-step explanation:

step 1 Address the input parameters and values

Quadratic Equation : x2 - 2x - 1 = 0

step 2 Substitute a , b and c values in below formula

x = - b ± √b² - 4ac

2a

=-(-2) ± √(-22 - 4 (1) (-1))

2(1)

=2± √4 - 4 (1)(-1)

2

=2± √4 + 4

2

=2± √8

2

step 3 Solve the above expression for minus & plus values

x1 = 2 + √8

2

= 2 + 2.8284

2

x2 = 2 - √8

2

= 2 - 2.8284

2

step 4 By simplifying the above expressions for x1 & x2

x1 = 4.8284

2

x1 = 2.4142

x2 = -0.8284

2

x2 = -0.4142

x1 = 2.4142 & x2 = -0.4142 are the roots for equation x2 - 2x - 1 = 0