Solve the equation without the use of a calculator. please Help!!! Thank you!!! 12x^3-30x=8-2x^2

Mathematics

1 answer:

Arisa [49]3 years ago

3 0

12x^3 +2x^2-30x = 8
2x( 6x^2 +x -15) = 8
so 2x= 8, x=4
(2x) ( 2x-3) ( 3x+5) = 8
2x-3 = 8
2x= 11
x= 5.5
3x+5=8
3x= 3
x=1

You might be interested in

Help on this i will give you 20 points

vodomira [7]

18/50 people = 0.36

36% like the clothing store.

Then with 125 people..

125 * 0.36 = 45 people

5 0

3 years ago

Marymount Township secured the construction of a power plant, which opened in 1990. Once the power plant opened

Aleksandr [31]

Answer:

92087,14873

Step-by-step explanation:

Given that Marymount Township secured the construction of a power plant, which opened in 1990. Once the power plant opened in 1990, the population of Marymount increased by about 20% each year for the first ten years and then increased by 5% each year after that

Let P0 be the population in 1990

Then we have in 2000 the population is

$P(2000) = P_0(1.2)^{10}$