20brookie06
20brookie06 20brookie06
  • 16-11-2020
  • Mathematics
contestada

Solve x2 − 7x = −12.

a. x = 2 and x = 6
b. x = 6 and x = −2
c. x = −4 and x = −3
d. x = 4 and x = 3

Respuesta :

gufeliz1965
gufeliz1965 gufeliz1965
  • 16-11-2020

x^2 - 7x = -12

Add 12 to both sides.

Doing so, we get x^2 - 7x +12 = 0.

We now factor the left side.

Doing so, we get (x - 3) (x - 4) = 0.

Set each factor to 0 and solve for x.

x - 3 = 0

x = 3

x - 4 = 0

x = 4

Answer: Choice d

Answer Link

Otras preguntas

It is believed that 3/4 of our dreams involve people that we know A. Write an expression to describe the number of dreams that feature people you know if you ha
order from least to greatest: 8,|3|,-5,|-2|,-2
The first thing to focus on when creating a workout plan is determining the frequency of the activity choosing the intensity level watching others complete t
a scale model of a human heart is 196 inches long. the scale is 32 to 1. how many inches long is the actual heart?
what is the definition prose
one bottle of aspirin holds 250 tablets, each containing 150 mg of aspirin and sells for $2.95. Another bottle holds 125 tablets, each containing 200 mg of aspi
This is the complete list of proper factors of a numberwhat is the number
What mass of ilmenite (in grams) is required if you wish to obtain 450 g of titanium? The mass of percent of titanium is 31.6%
which elements are found in the lithosphere
donnez des exemples de modalisateur svp.