f)𝑥+5 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 𝑥−1 h) 6𝑥+4 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 2𝑥+1 g) 2𝑥−4 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 𝑥+2 k) 3−2𝑥 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 𝑥+1 l) 2𝑥+3 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 3𝑥+1 m)2𝑥+1 𝑐ℎ𝑖𝑎 ℎế𝑡 𝑐ℎ𝑜 𝑥−3

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