what is the factor of x2-100?

what is the factor of x2-100?
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1 Answer

x^2 - 100
= x^2 - 10^2
= (x + 10)(x - 10)

Thus, the factors are x + 10 and x - 10.

Remember this formula: a^2 - b^2 = (a + b)(a - b)
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