A student solved a quadratic equation as shown here:
2x² + 5x = 12
x(2x + 5) = 12
x = 12or 2x+5 = 12
x= 120r 2x+5-5-12-5
x= 12or 2x=7
#= 120r ==
z = 7,12
Explain the errors in the process. Then correct the errors, and solve the equation.