elrishaann7 elrishaann7

29-09-2021
Mathematics

contestada

if (a²-1/a²)=23 find the value of i) (a+1/a), ii) (a³+1/a³)

pls help me

Respuesta :

janaetheanimeweeb janaetheanimeweeb

29-09-2021

Answer:

5

Step-by-step explanation:

(a + (1/a)2 = a2 + (1/a2) + 2

⇒ (a + (1/a))2 = 23 + 2

⇒ (a + (1/a))2 = 25

⇒ a + (1/a) =

⇒ a + (1/a) = 5

a3+b3=

(a+b)

(a2−ab+b2)

where a=a

and b=1/a.

so sum it up u get -1

Answer Link

Otras preguntas

Joyce has as much money as George; then they bet 5 cents each and George lost. If, after the bet, George has x cents, how much does Joyce have ?

Are the graphs of the lines in the pair parallel? Y=6x + 9 27x - 3y= -81

it possible for a figure to have rotational symmetry but not a line of symmetry?

Use graphs and tables to find the limit and identify any vertical asymptotes of the function lim x->4^- x/x-4

If X + 3y = 7 and y=2, then X =?

Plzzz help me with part A ,B and C

How many times per day does a clock make a right angle?

What is the number 212three in base-two form?

Which complex number has a distance of √17 from the origin on the complex plane? A;2 + 15i B:17 + i C:20 – 3i D:4 – i

Moth populations changed from mostly light colored to mostly dark colored in the 1800s. this relates to _____. microevolution both macroevolution and microevolu