jack355 jack355
  • 14-04-2017
  • Mathematics
contestada

which quadratic evaluation is to (x-4)^2 - (x-4) -6 =0

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 14-04-2017
we need the chocies but I can factor and solve
subsitute
u=x-4
u^2-u-6=0
what 2 numbers multily to get -6 and add to get -1
-3 and 2
(u-3)(u+2)=0
set to zero

u-3=0
u=3

u+2=0
u=-2

but u=x-4

3=x-4
7=x

-2=x-4
2=x

x=2,7
Answer Link

Otras preguntas

2 angles with measures that have a sum of 90
Whta is the sum of the the largest tow prime numbers that are less than 10
Megan and Julie are stuck simplifying radical expressions. Megan has to simplify the quantity of x to the one third power, over x to the one twelfth power. Juli
Rachel fills 13 water bottles per hour. Alyssa fills 15 bottle of water per hour. This week Alyssa filled an additional 5 bottles of water. Write an expression
What is the first step needed to solve 4 over 7 multiplied by x minus 5 equals negative 13?
What is the first step needed to solve 4 over 7 multiplied by x minus 5 equals negative 13?
what is the value of 3 in 136,422
56 out of 154 in simplest form of a fraction
7000 is 1/10 of what number
Solve the quadratic equation by factoring. 8x^2+21=-59x