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

A midwestern music competition awarded 35 ribbons. The number of blue ribbons awarded was 3 less than the number of white ribbons. the number of red ribbons was
A block of mass 3 kg slides down a frictionless inclined plane of length 6 m and height 4 m. If the block is released from rest at the top of the incline, what
Most autotrophs make “food” through the process of a. photosynthesis. b. homeostasis c. chemosynthesis d. cellular respiration
If 4x+5y=10 and x+3y = 8 then (5x+8y)/3=
What caused the rise of military government in Japan?
The sales tax rate is 8%. Estimate the tax on a jacket that costs $69.95.
If 4x+5y=10 and x+3y = 8 then (5x+8y)/3=
how do you figure out what is 1/4 of 10.
An object of mass 2 kg has a linear momentum of magnitude 6 kg • m/s. What is this object’s kinetic energy?
How many prime numbers are there between 56 and 100?