polokiddd2021 polokiddd2021
  • 11-05-2018
  • Mathematics
contestada

Write x2 − 2x − 3 = 0 in the form (x − a)2 = b, where a and b are integers.


A.(x − 4)2 = 3

B.(x − 3)2 = 2

C.(x − 2)2 = 1

D.(x − 1)2 = 4

Respuesta :

gmany
gmany gmany
  • 15-05-2018
[tex]x^2-2x-3=0\\\\x^2-2\cdot x\cdot1+1^2-1^2-3=0\\\\(x-1)^2-4=0\ \ \ \ |+4\\\\(x-1)^2=4[/tex]


Answer: D. (x - 1)² = 4.

Used:
(a - b)² = a² - 2ab + b²
Answer Link

Otras preguntas

The winner of the 20 km race ran at an average speed of 4 m / s. How long did he take to complete the race?
Trig ratio help pleaseeeee
10 Please help with this question
Which are responsibilities of public health agencies such as the Centers for Disease Control and Prevention? Check all that apply.
What is the difference between rhombus and a square?
i need help please with this question?
Compare and contrast the significance of foreign affairs to the United States at the time of its founding with its significance today
Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $55 per hour. The mechanics worked for acombined total o
Which of the following functions functions has a rate of change that stays the same? y=1/3x^2 y=2x y=-7x+9 y=x^2+1
Remove parentheses and simplify. 8h + 3k - 7(7h - 5k)