Which function is a quadratic function?

The function which is quadratic is:

We know that the general equation of a quadratic function is given by:

where a , b and c are real numbers.

1)

On solving we get:

Hence, the function is quadratic.

2)

It is not a quadratic equation since we have a term as :

and hence the equation will not match the general equation of the quadratic function.

3)

as it has a term of

Hence, it is a equation of a cubic function.

4)

On solving we get:

It does not has any term of

Hence, the equation is not a quadratic function it represent a linear function.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

0,0

step-by-step explanation: