math help!?

Question

explain to me how to solve the following equation for B
b squared - 40 =-15










Anser: b=___________

Answer 1

b^2 -40 = -15

add 40 to both sides

b^2 - 40 + 40 = -15 + 40

b^2 = 25

b=sqrt(25)

b=5 or -5

Answer 2

b² - 40 = -15
+ 40 + 40
b² = 25
b = +5, -5

Answer 3

b^2 - 40 = -15

First: our goal is solving for "b," and let's make sure "b" is on the left side: add 40 to both sides:

b^2 - 40 + 40 = -15 + 40
b^2 = 25

Second: get rid of the exponent by finding the square root of both sides:

b = +/- the square root of 25
b = -5, 5

Answer 4

Like this:
b squared - 40= -15
b squared -40 +40= -15+40
b squared equals 25

Answer 5

Add 40 to both sides.
b squared - 40 + 40 = -15 + 40
b squared = 25
then take the square root of both sides.
b = +/- 5
since both (-5) squared and (5) squared are 25.

Answer 6

b^2 - 40 = -15
add 40 to each side and get b^2 = 25
Take the square root of each side and get b = +/- 5
Try and get a handle on this stuff to understand it. Otherwise anyone could give you any bs answer and you wouldn't know if it's right or wrong, or why. Also you need to be albe to do it on your own for the test and that means you need to understand it.

Answer 7

b^2-40=-15
b^2 -40 +40 = -15 + 40
b^2 = 25
sr 25 = 5
b= 5

Answer 8

b^2 - 40 = -15
Add 40 to each side

b^2 - 40 + 40 = 40 - 15
b^2 = 25
b = 5 (actually +5 or -5, how picky is your instructor?)

Answer 9

1) add 40 to each side
b^2 = 25
2) take the square root of both sides :

b = negative or positive 5

good luck

Answer 10

b squared=40-15
b squared=25
b= square root of 25
b is either 5 or -5

This is basic stuff. You really need to be able to do this on your own.