Question

Which equation can be solved by using this expression?

Answer 1

The correct answer option is B. 2 = 3x + 10x^2

Explanation:

We are to determine whether which of the given equations in the answer options can be solved using the following expression:

`x=(-3 \pm√((3)^2+4(10)(2)) )/(2(10))`

Here,
`a = 10, b = 3` and
`c=-2`.

These requirements are fulfilled by the equation 4 which is:

`12=3x+10x^2`

Rearranging it to get:

`10x^2+3x-2=0`

Substituting these values of
`a,b,c` in the quadratic formula:

`x= (-b \pm √(b^2-4ac) )/(2a)`

`x= (-3 \pm√((3)^2-4(10)(-2)) )/(y)`