Question #edb58

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Answer 1 · 2018-01-07T22:22:25

$12 x^{2} - 7 x - 12$ $12x^2-7x-12$

Expand the brackets by simply multiplying each term by the other term in the other brackets.

$therefore$

$3x * 4x = 12x^2$

$3x *3 = 9x$

$-4 * 4x = -16x$

$-4 * 3 = -12$

Putting this together gives $12x^2+9x-16x-12$ which simplifies to $12x^2-7x-12$ .