WILL GIVE MEDAL AND FAN!!!

Solve the equation the square root of the quantity x plus 3 plus 4 equals 5 for the variable. Show each step of your solution process.

Question

WILL GIVE MEDAL AND FAN!!! 


Solve the equation the square root of the quantity x plus 3 plus 4 equals 5 for the variable. Show each step of your solution process.

rosales0228 · Answer

how do you do that though? I need to show the steps
@TrojanPoem

rosales0228 · Answer

would i just then ad the 3 and four together and then subtract if from the 5???

anonymous · Answer

Mathway.com it could help you

rosales0228 · Answer

Thanks!

anonymous · Answer

it help you

rosales0228 · Answer

@ncruz  yeah it did thanks so much!

@TrojanPoem  ya but i suck at them!

trojanpoem · Answer

Sorry,

trojanpoem · Answer

The square root of x

sqrt(x) + 3 + 4= 5

rosales0228 · Answer

It okay. do you know how to find the degree of polynomials?

rosales0228 · Answer

−10p2q + 7p3q − 5q i have to find the degree of this polynomial

trojanpoem · Answer

Steps to find the variable:

1) Sum both ( 4 + 3)
2) minus 5- the sum of (4 + 3)
3) square both sides

trojanpoem · Answer

The third degree

rosales0228 · Answer

okay thanks!

trojanpoem · Answer

-10p^2q + 7p^3 q - 5 q

take q as a common factor
q * 
(-10p^2 + 7 p^3 - 5) 
arrange according to power
7p^3 - 10p^2 - 5

trojanpoem · Answer

The biggest power is the degree

rosales0228 · Answer

Okay thanks so much again! on the one before that, do i just leave them squared?

trojanpoem · Answer

sqrt(x) + 7 = 5
sqrt(x) = - 2
x = 4

rosales0228 · Answer

Okay, but when I go to check it they dont match

trojanpoem · Answer

What do you mean ?

rosales0228 · Answer

when im solving a radical equation i have to check my work so i have to plug 4 back in for x and see if they both equal out to 4

trojanpoem · Answer

Sqrt(x) + 3 + 4 =5
sqrt(x)  = -2
No answers, sqaure roots can't result in -2

trojanpoem · Answer

@Michele_Laino

michele_laino · Answer

maybe the right equation is like this:
$$\sqrt {x + 3}  + 4 = 5$$

michele_laino · Answer

as we can see, its solution is $x=-2$

trojanpoem · Answer

You're right, the quantity ( x + 3)

michele_laino · Answer

the radical exists, if and only if the subsequent condition holds:
$$x + 3 \geqslant 0$$
so, $x=-2$ is acceptable

trojanpoem · Answer

Yeah ( sqrt( -2 + 3 ) + 4=  5

michele_laino · Answer

how to find that solution?
first step:
I rewrite that equation as below:
$$\sqrt {x + 3}  = 5 - 4 = 1$$
second step:
I take the square of both sides, so I can write this:
$$x + 3 = 1$$
please simplify