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#### paulmdrdo

##### Active member

- May 13, 2013

- 386

i don't know where to start. what i know is i have to use properties of real numbers. please help!

1. $\displaystyle \left ( x+3 \right )\left(x+2\right)\,=\,\left ( x+3 \right )x+\left ( x+3 \right )2\,=\,\left ( x^2+3x \right )+\left ( 2x+3*2 \right ) $

2. $\displaystyle \left(3x^2+2\right)+\left(x^2+2x\right)\,=\,\left(\left (3x^2+2\right)+x^2\right)\,=\,\left(x^2+\left(3x^2+2\right)\right)+2x$