arjungurung2026 arjungurung2026

02-09-2021
Mathematics

contestada

if a- 2b +3c =0 prove that a³ -8b³+ 27c²= - 18abc

Respuesta :

ferrybukantoro ferrybukantoro

02-09-2021

Step-by-step explanation:

the answer is in the photo as attached

Ver imagen ferrybukantoro

Answer Link

mhanifa mhanifa

02-09-2021

Answer:

Use the identity:

x³ + y³ + z³ = 3xyz if x + y + z = 0

Substitute:

x = a, y = -2b, z = 3c

to get

a³ + (-2b)³ + (3c)³ = 3a(-2b)(3c)
a³ - 8b³ + 27c³ = --18abc

Answer Link

Otras preguntas

what was Pablo Picasso inspired by when he painted head of a sleeping woman? his wife African mask the weather a still life

who is the person to get all around the earth in 60 days

23.-28. In a manner similar to Example 1, (a) identify input and output consistent with the general proportional model; (b) write an equation for the model; (c)

Negative criticism is generally a. private b. public C. productive d. practical Please select the best answer from the choices provided Ο Α. OB ОС OD

Brainliest if correct

A solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water. The molar mass of Cu is 63.55 g/mol the molar mass of S is 32.07 g/mol, and the molar ma

Find a solution to the linear equation –7x+y= –28. a

Pablo Picasso painted the Guernica in 1937. It is regarded by many art critics as the most moving and powerful anti-war painting in history. The artwork best fu

Suppose that because of globally adverse meteorological conditions, there are serious concerns of climbing prices in an extensive group of commodities. As a res

What state is the geographic center of north america.