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X2+3x+x+3=x(x+1)+3(x+1)=(x+3)(x+1)
-3(x - 3)(x + 1)(x + 1)
1 plus 1 x 2 plus 3 x 42 plus 10 x 5 = 1 + 2 + 126 + 50 = 179
x + x + 1 + x + 2 + x + 3 = -144x + 6 = 144x = 8x = 2
(2x + 3)(x + 1 ) = 2x^2 +5x +3