After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply.
a.-x^3+4x+7=2x^2-9
b. x^2+x+2=0
c.3x^3+9x+3x^2=14+x-1
d.5x+4=3x^3-2

Option B:

Step-by-step explanation:

Any equation of degree 2 is called a quadratic equation.The highest power of the variable is called the degree of the equation.

Quadratic equations can be solved using quadratic formula.

Option B is a quadratic equation as it is degree 2 equation and hence can be solved by using quadratic formula.

step-by-step explanation: