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Question
Factorize 3x2+14x+15.
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Solution
3x2+14x+15=0
x1,2=−b±√b2−4ac2a
x=−14+√142−4⋅3⋅152⋅3
=−14+√166
=−106=−53
x=−14−√142−4⋅3⋅152⋅3
=−14−√166
=−186=−3
x=−53,x=−3
3x2+14x+15=0
x1,2=−b±√b2−4ac2a
x=−14+√142−4⋅3⋅152⋅3
=−14+√166
=−106=−53
x=−14−√142−4⋅3⋅152⋅3
=−14−√166
=−186=−3
x=−53,x=−3
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