Using the quadratic formula to solve 2x^2 = 4x – 7, what are the values of x?

Step-by-step explanation:

To use the quadratic formula, we must write the quadratic in standard form, viz:

2x^2 - 4x + 7 = 0

Start by calculating the discriminant.  That's b^2 - 4(a)(c).  Here,

a = 2, b = -4 and c = 7, and so the discriminant for this particular problem is

(-4)^2 - 4(2)(7), or 16 - 56, or 40.

Recall that  a positive discriminant indicates two real, unequal roots.

Now we write out the whole quadratic formula, with the appropriate constants inserted (see above):

       -(-4) ± √40          4 ± (√4)(√10)          4 ± 2√10

x = =  =  

               2(2)                        4                          4

                                    2 ± √10

which reduces to x =

                                          2

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150