Which quadratic equation is equivalent to (x - 4)2 – ( - 4) - 6 = 0?
(u - 4)2 – (u - 4) - 6 = 0 where u = (x - 4)
o v2-(u - 4) - 6 = 0 where u = (x - 4)
o 02 - 16 - 4-6 = 0 where u = (x - 4)
o 02-4-6 = 0 where u = (x - 4)

where

Step-by-step explanation:

we have

Let

substitute in the expression above

Solve for u

Complete the square

Rewrite as perfect squares

square root booth sides

Solve for x

Remember that

For u=3

---->

For u=-2

---->

14

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!