Question

if x^4 + 1/x^4 = 146 , thenwhich number is subtracyed from both sides to make LHS (x^2 + 1/x^2)^2 ?

Answer 1

expand (x^2 + 1/x^2)^2

Answer 2

can you please give me a detailed solution?

Answer 3

do you knw (a+b)^2 formula, can you do what i asked above

Answer 4

ya
(a+b)^2=a^2+2ab+b^2

Answer 5

use that and expand

(x^2 + 1/x^2)^2

Answer 6

okk
x^2+1/x^2)^2=x^4+2+1/x^4

Answer 7

like this :-

\(\large (x^2 + \frac{1}{x^2})^2\)

\(\large (x^2)^2 + (\frac{1}{x^2})^2 + 2.x^2.\frac{1}{x^2} \)

\(\large x^4 + \frac{1}{x^4} + 2.\cancel{x^2}.\frac{1}{\cancel{x^2}} \)

= ?

Answer 8

so we need to add what number ?

Answer 9

-2

Answer 10

no, +2

Answer 11

ok thanks

Answer 12

np, you're welcome :)

Answer 13

but my qs is about subtracting can you please take a look at it?

Answer 14

you there sir

Answer 15

then you're right !

Answer 16

Sir can you please solve and show me entire thing because i am stll confused

Answer 17

i dont think so, maybe you need to go try multiple times until you feel comfortable

Answer 18

can you help me with another question?

Answer 19

sure il be happy to help if i can :) ask..

Answer 20

What height of cubical vessal if volume is
10 litres and base area is 1000 cm2

Answer 21

volume = base area * height

10 liter = 1000cm^2 * height

10 * 1000 cm^3 = 1000cm^2 * height

Answer 22

you can find the height in cm

Answer 23

10 is the answer?

Answer 24

yes 10cm

Answer 25

let me knw if u dont get liter to cm^3 conversion..

Answer 26

hws that?

Answer 27

hows what

Answer 28

\[2.57*2.57-2*2.57*0.57+0.57*0.57*0.57/2.57-0.57\]

Answer 29

please can you make this simple

Answer 30

i dont see any pattern. you may let a = 2.57, b = .57 and give a try though..

Answer 31

kk il giv it a try

Answer 32

Find the diagonal of a cube whose surface area is
600 cm2

Answer 33

whats the formula for surface area of cube ?

Answer 34

6L^2

Answer 35

6L^2 = 600

L = ?

Answer 36

l=side