Work Step by Step
$(3x+7)(x^2+5x+2)$ $=3x(x^2+5x+2)+7(x^2+5x+2)$ $=3x^3+15x^2+6x+7x^2+35x+14$ $=3x^3+15x^2+7x^2+6x+35x+14$ $=3x^3+22x^2+41x+14$
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