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Scrat [10]
3 years ago
8

When factored completely, z2 - 9 equals?

Mathematics
2 answers:
Semenov [28]3 years ago
7 0

Let's see

\\ \bf\bull\rightarrowtail z^2-9

\\ \bf\bull\rightarrowtail z^2-3^2

  • (a+b)(a-b)=a^2-b^2

\\ \bf\bull\rightarrowtail (z+3)(z-3)

Paladinen [302]3 years ago
3 0

Answer:

(z+3)(z-3)

Step-by-step explanation:

a^2 - b^2 = (a+b)(a-b) where a = z and b= 3

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