SAT Math Fundamentals: Factor Completely

Factor Out the Greatest Common Factor

After the lesson, try this practice problem.

Factor out the greatest common factor from $3x^2 + 9x -18$ .

$3x(x+3-6)$

$3(x^2+3x-6)$

$3x(x^2+3x-6)$

$3(x^2+3x -15)$

After the lesson, try this practice problem.

Factor $x^2-9x+18$

$(x-6)(x+3)$

$(x-9)(x+2)$

$(x-3)(x-6)$

$(x+9)(x+2)$

After the lesson, try this practice problem.

Factor $3x^2+6x-24$ completely.

$3(x^2+2x-8)$

$3(x+4)(x-2)$

$(3x+6)(x-4)$

$3x(x+8)(x-3)$