ashleymarso ashleymarso

24-11-2020
Mathematics

contestada

What is the intermediate step in the form (x + a)? = b as a result of completing the
square for the following equation?
x2 + 18x + 57 = 12

Respuesta :

jimrgrant1 jimrgrant1

24-11-2020

Answer:

(x + 9)² = 36

Step-by-step explanation:

Given

x² + 18x + 57 = 12 ( subtract 57 from both sides )

x² + 18x = - 45

To complete the square

add ( half the coefficient of the x- term)² to both sides

x² + 2(9)x + 81 = - 45 + 81

(x + 9)² = 36

Answer Link

Otras preguntas

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 4. What sample mean would have

A bag of marbles contains 5 red, 10 blue, 3 yellow and 7 green marbles. lisa chooses one marble at random from the bag. what is the probability of not choosing

a sudden rise in the market demand in a competitive industry leads to

A signer offers two choices for dinner by shifting to the right, signing PIZZA, then shifting to the left and signing HAMBURGER. Which of the following is the s

The laws governing search and seizure in the public sector are much more straightforward than those in the private sector. a. True b. False

Find the extreme values of f subject to both constraints. (if an answer does not exist, enter dne.) f(x, y, z) = x + 2y; x + y + z = 4, y2 + z2 = 4

We humans have wondered for many centuries about what exists in the universe that surrounds us. Which kind of pronoun case is the bold word? A. objective case B

_____ is the type of meaning that is implied by associations or overtones. antonym connotation synonym denotation

a community Center has three swimming pools.the water level of each pool is measured at 8:00pm each night.Two of the measurements from Saturday night are shown.

A savings account compounds interest, at a rate of 17%, once a year. John puts $1,000 in the account as the principal. How can John set up a function to track t