Find the interval notation x^2+4x+3>=0

Bodonimhk

Bodonimhk

Answered question

2022-10-29

Find the interval notation
x 2 + 4 x + 3 0

Answer & Explanation

Sauppypefpg

Sauppypefpg

Beginner2022-10-30Added 23 answers

Answer:
x 2 + 4 x + 3 0 x 2 + 4 x + 3 = 0 x 2 + 3 x + x + 3 x ( x + 3 ) + 1 ( x + 3 ) = 0 ( x + 1 ) ( x + 3 ) x + 1 = 0 x = 1 x + 3 = 0 x = 3
Interval notation: ( , 3 ] [ 1 , )

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