Question

Nathaniel is using the quadratic formula to solve 0 = x2 + 5x - 6. His steps are shown below.



What are the solutions to the equation?

x = –1, 6
x = –6, 1
x = –22, 27
x = –27, 22

Answer 1

someone help plzzzz

Answer 2

Please write 0 = x^2 + 5x - 6. Your " 0 = x2 + 5x - 6" is vague (x2 could mean "x times 2."

Why not actually solve the problem yourself, using the quadratic formula? Then you could compare the outcome of your work to the four given answers.

Answer 3

sorry its x^2

Answer 4

You have the answer in the final row of your table.

The +/- symbol means that the first time you do the calculation with the + and a second one with a -

For example:
\[ a = 1 \pm 3 \]
Take the plus first:
\[ a = 1 + 3 = 4 \]
Then take the minus
\[ a = 1 - 3 = -2 \]
This means a=4 or a=-2

You should be able to apply the same principle to find the two roots of the quadratic equation.

Answer 5

x = –27, 22?

Answer 6

It's not -27,22

I should've used a letter other than a, I apologise. My example has nothing to do with the question, it was just to illustrate what the +/- means.

Answer 7

oh

Answer 8

well idk then

Answer 9

Here are the two answers, which is the picture that you uploaded:
\[x = \frac{-5 \pm \sqrt{49}}{2}\]

Using the example of how to deal with the +/- sign, you should be able to get two answers out of it. Show me what steps you're taking to work them out.