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SIZIF [17.4K]
3 years ago
11

Use the Distributive Property to find (z−5)(z+3).

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0
Consider, (z-5)(z+3). Let's say a = z-5 then the problem reduces to a(z+3)=za+3a. (Do you understand this step?)

So then replacing a again with our definition we get, z(z-5)+3(z-5)=z^2-5z+3z-15=z^2-2z-15.
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