Mathematics: Select all of the following that are quadratic equations. 7x^2 + 14x = 0 x^3 - 3x^2 + 1 = 0 5x - 7 = 0 x^2 + 3x -5 = 0 x - 5 = 9x + 7 x^2 - x = 3x + 7

Select all of the following that are quadratic equations.

Ответ:

iamsecond235p318rq

01.01.2022

Mathematics

7x^2 + 14x = 0x^2 + 3x -5 = 0 x^2 - x = 3x + 7

Step-by-step explanation:

In order, the highest degree of the variable x in these equations is ...

2, 3, 1, 2, 1, 2

The equations having a highest degree of 2 are quadratic equations.

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Ответ:

Chen5968

30.05.2023

Mathematics

It must be three because both sine and tangent are negative in Quadrant IV and thus is the only viable answer; however none are correct because the sine function never exceeds -1 or 1, so I believe this is a mistake.

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Select all of the following that are quadratic equations.
7x^2 + 14x = 0
x^3 - 3x^2 + 1 = 0
5x - 7 = 0
x^2 + 3x -5 = 0
x - 5 = 9x + 7
x^2 - x = 3x + 7

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