03-06-2020
Mathematics

contestada

If 4x^2 – bx + 81 is a perfect square trinomial. Then the value of b is

Respuesta :

SvetkaChem SvetkaChem

03-06-2020

Answer:

b = 36

Step-by-step explanation:

perfect square: a² - 2ac + c²

4x²- bx + 81 = (2x)² - bx + 9² = (2x)² - 2*(2x)*(9) +9²= (2x)² - 36x +9²,

so b = 36

Answer Link

Otras preguntas

Longitudinal waves do not have a.amplitude b.frequency c.wavelength d.speed e.nonsense, longitudinal waves have all of these properties

The range of phenotypic differences possible as a result of different environments reacting with a specific genotype is called the

A hacker changing the ip addresses used in conjunction with a particular company’s web site to re-route them to the hacker’s servers is called dns _____________

A fictional element has two isotopes and an atomic mass of 87.08 amu. if the first isotope is 86 amu and the second isotope has a mass of 90 amu. which isotope

Consider this three-digit sequence: 943. Is the first digit the largest or the second digit the smallest, AND, is the third digit even or the first digit odd?

A solution of water (kb=0.512 ?c/m) and glucose boils at 103.06 ?c. what is the molal concentration of glucose in this solution? assume that the boiling point o

use the table of integrals to solve integral: cos(x)/ sin^2-81 dx

What do you need to do to prove a line is an angle bisector of an angle?

What chacharacteristic help you tell the difference between a rhombus and a rectangle? Explain.

How many electrons are there on the outer shell of a sodium atom?