# Grade 9 Math: Linear Relations and Equations Intro to Factoring

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### Expand the following expression: $$4x(5+7x+6)+3(x-4)$$

$$28x^{2}+47x-12$$
$$75x-2$$
$$0$$
none of the above

### Expand the following expression: $$x(2+3x+2y)-3(y-1)+2(x-y)$$

$$3x^{2}+11xy+-7y+1$$
$$3x^{2}+5x+-7y+3$$
$$8x+2xy-5y+3$$
$$3x^{2}+5x+2xy-5y+3$$
### Factor the follow equation: $$48x^{2}+24x^{4}+12x$$
$$x(4x+2x^{3}+1)$$
$$12x(4x+2x^{3}+1)$$
$$12x(4x+2x+1)$$
$$12x(4x+x^{3}+1)$$