Answer
a)(3x+2)(x+4)
b)(4x+5)(3x+1)
Work Step by Step
a)3$x^2$+14x+8=3$x^2$+12x+2x+8=3x(x+4)+2(x+4)=(3x+2)(x+4)
b)12$x^2$+19x+5=12$x^2$+4x+15x+5=4x(3x+1)+5(3x+1)=(4x+5)(3x+1)
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