Question

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Answer 1

(x+1) (x+2) ≤ 2+ (x+3) (2x+1)  ÷ 2

2 (x+1) (x+2) ≤ 4 + (x+3) (2x+1)

2x² + 4x + 2x + 4 ≤ 4+2x²  + x + 6x + 3

2x ²  + 6x + 4 ≤ 4 + 2x ​²​​ + x + 6x + 3

2x ²​​ + 6x + 4 ≤ 7 + 2x ²+ 7x

6x + 4 ≤ 7 + 7x

4 ≤ 7 + 7x − 6x

4 ≤ 7 + x

4 − 7 ≤ x

−3 ≤ x

x ≥ −3