gracealexander4137 gracealexander4137

11-11-2018
Mathematics

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how would the expression x^2-4 be written using difference of squares

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wegnerkolmp2741o wegnerkolmp2741o

11-11-2018

Difference of squares

x^2 -a^2 = (x-a) (x+a)

x^-4 =x-2^2 = (x-2)(x+2)

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Аноним Аноним

11-11-2018

a^2 - b^2 = (a + b)(a - b) so we have a = x and b = 2:-

x^2 - 4 = (x + 2)(x - 2) (answer)

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