4x^2 = − 9x − 4 quadratic

Yes, see the explanation.

Roots:

x = , or x= -10

Step-by-step explanation:

A quadratic fomrual in standard form is;

ax^(2) + bx + c = 0

The given equation:

4x^2 = -9x - 4

Maniplate the equation using inverse operations

4x^2 = -9x - 4

-4x^2    -4x^2

0 = -4x^2 - 9x - 4

Yes, this is a quadratic equation, because it fits the requirement of being able to be written in standard form.

Now find its roots:

-4x^2 -9x - 4 = 0

remember,

x =

Substitute in the given values

x=

Simplify,

x =

x =

x =

or

x= -10

i am thinking c. sorry if im wrong .

step-by-step explanation:

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.