janakisinghtha007 janakisinghtha007

18-04-2021
Mathematics

contestada

if y+z=4 and yz=3 then find y³+z³=?

Respuesta :

gayanepoghosyan gayanepoghosyan

18-04-2021

Answer is 28
y+z=4 => y=4-z
yz=3 => (4-z)z=3
=> z^2-4z+3=0
=> z=1 y=3 OR z=3 y=1
=>y^3 + z^3 =3^3+1=28

Answer Link

Otras preguntas

biological importance of polysaccharides

What are three responsibilities of political parties?

Start four fundamental laws of chemical Combinations and the scientist that stated each below (1) Law of Conseriation of mass (2) Law of Definite proporsionis

A flywheel (I= 50 kg-m²) starting from rest acquires an angular velocity of 200.0 rad/s while subject to a constant torque from a motor for 5 s. (a) What isthe

Read the excerpt from "The Most Dangerous Game." "Off there to the right—somewhere—is a large island," said Whitney. "It's rather a mystery—" "What island is it

Find the minimum for this list of numbers 9 60 6 45 50 8 28 19 5 74 24 13 81 23 11

How does cyclic movement differ from migration? A. Cyclic movement is permanent and migration is temporary. B. While both include a return home, cyclic movement

The length and width of a rectangular room are measured to be 3.95±0.05m and 3.05±0.05m, respectively. The area & premeter of the floor is

Which of the following equations is written in standard form? A) 4x-2y=0 B) -8x+4y=1 C) -3y+x-4=0 D) 2+3x-6y=0

Given f(x)=9x-7, g(x)= 7x-6 find (f-g)(x)