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Solve the polynomial (Preferably with the X or Box method) 2a^2+6a=20

Solve the polynomial (Preferably with the X or Box method) 2a^2+6a=20
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3 votes
Solve the polynomial (Preferably with the X or Box method) 2a^2+6a=20

User Willian Adamczyk
by
8.4k points

1 Answer

5 votes

Answer:

Explanation:


2a^(2) +6a=20\\2a^(2) +6a-20=0\\a^(2) +3a-10=0\\a^(2) +5a-2a-10=0\\a(a+5)-2(a+5)=0\\(a+5)(a-2)=0\\a=2,-5

User HansUp
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