mf0datazz mf0datazz

03-02-2017
Mathematics

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Use factoring by difference of squares to solve the equation, x^2 - 81 = 0.

A. x = 9 or x = -11
B. +/- 9
C. +/- [tex] \frac{11}{9} [/tex]
D. +/- [tex] \frac{9}{11} [/tex]

Respuesta :

yashddsy26 yashddsy26

03-02-2017

the answer is B +/- 9 !!

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