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(4x2 - 5x - 2)(x2 + 5x + 2)
 Mar 14, 2014
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preciouslove:

(4x2 - 5x - 2)(x2 + 5x + 2)



You have to know that you need to take the 4x 2 and multiplicate it by x 2, after that by 5x, and finaly by 2, and you do the same thing whit the second factor and the third.

You'll have this answer:

4x 4 + 20x 3 + 8x 2 - 5x 3 - 25x 2 + 10x - 2x 1 -10x - 4

Now, you need to simplicate the answer. At this point, you need to locate the same exponent to all X's. you have x 4, x 3, x 2, x. Simplificate the equation.

Know that x 4, x 3, x 2, x ARE NOT THE SAME THINGS, they are like apple, banana and orange!

4x 4 + 15x 3 - 17x 2 -4
 Mar 14, 2014

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