Put the terms in order of decreasing degree, all on the left. When convenient, it is nice to have mutually prime integer coefficients with the leading one positive.
a) x² -2x +1 = 0
b) x² +15 = 0
c) 4x² -12 = 0
or, better, divide out the common factor of 4.
x² -3 = 0
d) 3x² -x -5 = 0
_____
Shown is the standard form for a single-variable second-degree equation. Form varies depending on the nature of the equation. Equations of conic sections have different standard forms, depending on the curve.
Answer:
D
Step-by-step explanation:
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<u>Step</u>-<u>by</u>-<u>step</u> <u>explanation</u>:

<u>Note</u>:-
- A fraction is said to be written in its lowest form if its numerator and denominator are prime, that is, they have no common factors other than 1.

Answer:
s>885 (km/h)
Step-by-step explanation:
Since 885 is not a part of the inequality and the new aircrafts' speeds are greater than 885, speed s>885.