3 years ago

If x^2+2=3^2/3+3^-2/3 then prove that 3x^3+9x-8=0

Mathematics

2 answers:

prisoha [69]3 years ago

8 0

here is the solution

gregori [183]3 years ago

6 0

Answer:

See below.

Step-by-step explanation:

x^2 + 2 = 3^2/3 + 3^-2/3

x^2 = 3^2/3 + 3^-2/3 - 2

x = √(3^2/3 + 3^-2/3 - 2)

x = 0.748888296

Substitute for x in 3x^3 + 9x - 8:

3( 0.748888296)^3 + 9( 0.748888296) - 8 = 0.

So it is proved.

You might be interested in

what impact did Ida b. wells have on the civil rights movement in the late 1800's?

const2013 [10]

<span>D. She wrote articles and gave speeches about hate crimes against blacks in the south.</span>

4 0

3 years ago

Read 2 more answers

X − 5 = 17 A) x = 22 B) x = 12 C) x = 3.4 D) x = -12

Lapatulllka [165]

Answer:

A. X=22

Step-by-step explanation:

x - 5 = 17

x =17 + 5

x = 22

5 0

3 years ago

The graph of y=f(x) is a transformation of the graph y=h(x) write a formula for the function f in terms of function h

Marat540 [252]

Answer:

y=h(x)-8

Step-by-step explanation:

it shifted down 8 units

7 0

3 years ago

1. Your high school freshman class had a total of $1200 from fund-raisers during the year. To help

zysi [14]

Answer:

a is 67.20 and b is 1267.20

Step-by-step explanation:

first you have to multiply 1200 from 5.6% and you get 67.20 then you have to add 1200 to 67.20 and you get 1267.20

4 0

2 years ago

Gal Gadot borrows $125,000 at a yearly simple interest rate of 4.5%. How much would she pay, in total, if she paid off the loan

labwork [276]

Answer:

$241,910.31

Step-by-step explanation:

Compound interest

125,000(1.045)^15

Also, Gal Gadot is the best!

5 0

2 years ago

If x^2+2=3^2/3+3^-2/3 then prove that 3x^3+9x-8=0​

If x^2+2=3^2/3+3^-2/3 then prove that 3x^3+9x-8=0