Question

Please find as many errors as you can and explain all the errors.

Answer 1

So, we have the equation

3x²-4x = 20

Which can be rewritten as:

3x²-4x-20 = 0

a= 3

b= -4

c= -20 (incorrect in the original version, that said it was 20)

`\begin{gathered} x=(-b\pm√(b2-4ac))/(2a) \\ CORRECT \end{gathered}`

I'm writing the correct version of the next step of the quadratic equation below. The original is INCORRECT.

`x=(-(-4)\pm√((-4)²-4(3)(-20)))/(2(3))`
`x=(4\pm√(16+240))/(6)`
`\begin{gathered} x=(4\pm√(256))/(6) \\ x=(4\pm16)/(6) \\ x=20/6 \\ x=-2 \end{gathered}`