Question

Which equation could be solved using this application of the quadratic formula? PLS HELP

Answer 1

Answer: D

Explanation:

The quadratic formula helps you find the roots of a quadratic function, specifically where the function equals zero. In order for an equation to match the use of the quadratic formula shown, the value of 'b' must be +12. It also demands that 'a' must be +2, and 'c' must be -9. Answer D has all these prerequisites.

Answer 2

d)
`2x^2+12x+4=13`

Explanation:

Quadratic formula:

`x=(-b\pm√(b^2-4ac) )/(2a)`

The quadratic formula can be used to solve a quadratic equation in the form
`ax^2+bx+c=0`

From inspection of the given quadratic formula:

• a = 2
• b = 12
• c = -9

Therefore, plugging these values into the general form of the quadratic equation:

`2x^2+12x-9=0`

If we add 13 to both sides we get:

`2x^2+12x+4=13`