Why is it important for the leading coefficient to be non zero

if the leading coefficient was 0 then it would just be a linner function not a quadratic

Step-by-step explanation:

only if this is about quadratics

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

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