Question

Need Help!!
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Answer 1

Whats the question

Answer 2

What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?

x ≈ −3.23 and x ≈ 0.23
x ≈ −2.72 and x ≈ −0.28
x ≈ 0.28 and x ≈ 2.72
x ≈ −0.23 and x ≈ 3.23

Answer 3

i said this was C got it wrong...

Answer 4

Hmm hold on

Answer 5

Add 12x to both sides

Answer 6

Then you have a wuadratic equation

Answer 7

Quadratic

Answer 8

okay

Answer 9

Just plug everything into a calculator and tell me what you get

Answer 10

or use the quadratic formula if you can't use a calculator

Answer 11

4x^2+12=28 and -12+12=0

Answer 12

and than 3+12=15

Answer 13

\[4x^2 + 3 = −12x\] is the first one.

then add 12x to both sides and you get

\[4x^2 + 12x + 3 = 0\]

and you can use a graphing calculator or use the quadratic formula

Answer 14

so its A? @tburn25

Answer 15

i said it was D but no

Answer 16

It's really important that you show your work if y ou want meaningful feedback on it. "so its A" does not in any way contribute to your understanding of this material. Please justify your choices. Ask questions (real questions) for clairification of anything not clear to you. Thx.

Answer 17

Which method do you plan to use here, to obtain approx. solutions? elimination by addition/subtraction? substitution? graphing?

Answer 18

i did subtraction

Answer 19

its B by the way

Answer 20

is he gone?

Answer 21

use this site and just plug in the equations you need

https://www.desmos.com/calculator

Answer 22

hes back
i subtracted

Answer 23

I definitely am back.
"What are the approximate solutions of 4x2 + 3 = −12x" What type of equation is this? There are particular methods you'd want to use to solve this type of equation. What are some of them?

Note: This is not a case of "simultaneous equations," so I should not have mentioned "substitution" or "elimination by addition / subtraction." Sorry.

Answer 24

So, please think this through again: "What are the approximate solutions of 4x2 + 3 = −12x" You have a _________ equation here and need to apply one of several available methods to solve it for x. What are some of those methods, besides graphing?

Answer 25

subtraction elimantion combining like terms

Answer 26

Please apply whatever method you think is best (under these circumstances) to solving the equation at hand: 4x^2 + 3 = −12x.

This is a ____________________ equation and should be re-arranged before you try to solve it for x.

Answer 27

Hint: for the name of this equation, re-read this conversation.

You're working with a ____________________ equation.

Answer 28

I am confused

Answer 29

This is a quadratic equation, as mentioned by others (above).
What are several methods for solving quadratic equations? One is the quadratic formula. Another is factoring. Could you look these up and write down what you need to know to apply these methods to the quadratic formula at hand?

I need to get off the 'Net, but will return later today. Please, to help yourself, look up "quadratic equations" and look for some of the methods used to solve them, along with examples. Good luck.

Answer 30

thanks