NOTE: xx can be written as x^2 i.e. x squared
3x^2 + 16x + 5
= 3 x^2 + x + 15x + 5 (Since 16x = x + 15x)
= x ( 3x + 1 ) + 5 ( 3x + 1 )
= ( x + 5 ) ( 3x + 1 )
Therefore the factors are ( x + 5 ) and ( 3x + 1 )
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4x(4x^2 + 3x + 1)
5x2-16x+12 = (5x-6)(x-2) when factored
Too bad that's not x^2 - 16x + 64 which factors to (x - 8)(x - 8)
It is: 4x(1+4)
It is 4 terms of an algebraic expression.