subject
Mathematics, 21.04.2021 09:20 neonaandrews10

Solve by completing the square. x2 - 4x – 20 = 0

A. x = {-2±6√2}

B. x = {2+6√2}

C. x = {2+2√6}

D. x = {-2±2√6}

Show your work.​

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 15:00
What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.
Answers: 3
question
Mathematics, 21.06.2019 16:30
The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257
Answers: 2
question
Mathematics, 21.06.2019 17:00
The variable in a relation who’s value depends on the value of the independent variable is called what?
Answers: 1
question
Mathematics, 21.06.2019 19:00
Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.
Answers: 2
You know the right answer?
Solve by completing the square. x2 - 4x – 20 = 0

A. x = {-2±6√2}

B. x = {2+6...
Questions