Mathematics: Find the discriminant and determine the number of real solutions : 4x^2 + 7x - 15 = 0

Find the discriminant and determine the number of

Ответ:

mayavue99251

12.03.2022

The discriminant of a quadratic expression $\displaystyle{ ax^2+bx+c$ is
$\displaystyle{ D=b^2-4ac$ .

In the quadratic 4x^2+7x-15

, a=4, b=7, and c=-15.

Thus, $\displaystyle{ D=b^2-4ac=7^2-4(4)(-15)=49+240=2890$ .

The discriminant is positive, this means that the equation has 2 real solutions.

2

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Ответ:

someone2301

07.01.2023

Mathematics

the answer is PER

Step-by-step explanation:

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Find the discriminant and determine the number of real solutions : 4x^2 + 7x - 15 = 0

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