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Evaluate z^2−3 z+4 , when z=−4

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Evaluate z^2−3 z+4 , when z=−4

asked Nov 19, 2022 8.3k views

1 vote

Evaluate z^2−3 z+4 , when z=−4

Mathematics
college

7.7k points

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2 Answers

2 votes

It should be -19

I got the answer by plugging it into Desmos scientific calculator.

Matthijs Wessels answered Nov 21, 2022

by Matthijs Wessels

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5 votes

Answer:

8

Explanation:

=z²-3z+4 when z is 4

=4²-3(4)+4

=16-12+4

=8

Zeth answered Nov 25, 2022

by Zeth

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