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Factor the trinomial by guess and check 2c^2 - 14c+20
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Factor the trinomial by guess and check

2c^2 - 14c+20

User Frank Fu
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2c^2-14c+20=0 \\ c^2-7c+10=0 \\ (c-2)(c-5)=0 \\ c_1=2,c_2=5.

User XWZ
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