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Chasity Vargas
Mathematics
1 May, 06:56
Factor the polynomial x^2 - 16
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Chaz Serrano
1 May, 06:57
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Here's the way I like to think through these factoring problems involving the difference of two squares. First, make sure dealing with a perfect square minus a perfect square. In this case we are.
So this binomial will factor as the product of two binomials.
The first binomial will have a + in the middle and the second binomial will have a - in the middle. In the first position, we will have the factors of x² that are the same so x time x. In the second position will be the factors of 16 that are the same, 12 times 12.
(x + 4) (x - 4) is your answer, a factored version of x² - 16.
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Hadassah Vega
1 May, 07:05
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Answer : (x+4) (x-4), when factored out, is x^2-4x+4x-16.
combine like terms and the - 4x and 4x cancel leaving you your original problem x^2-16.
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