He is wrong because if a + b > c it doesn't follow that a^2 + b^2 > c^2
(a + b^2 will always be greater than c^2 but a^2 + b^2 will not always be.
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An example:
Right angled triangle with sides 3, 4 and 5:-
3 + 4 > 5 but 3^2 + 4^2 = 5^2
Answer:
ABC
Step-by-step explanation:
Look at the picture.
the length of horizontal segment: |10 - 4| = |6| = 6
the length of vertical segment: |8 - 3| = |5| = 5
Use the Pythagorean thorem:
Equations 1 and 4 would produce a parabola as they follow the general equation of a parabola.
Given equations are:

<h3>What is the general equation of a parabola?</h3>
The general equation of a parabola
or 
where h and k are vertices of the parabola.
Each equation follows the same pattern as the general equation of a parabola except the second and third equation
Therefore, equations 1 and 4 would produce a parabola as they follow the general equation of a parabola.
To get more about parabola visit:
brainly.com/question/4148030
5 because it’s a double negative which offsets the answer to be positive 5