4/5 to 8/5 percent change

Saying a -25% change is equivalent to stating a 25% decrease.

Note that if we let V1 = 2.625 and V2 = 3.50 we would get a 33.3333% increase. This is because these percentages refer to different amounts: 25% of 3.50 versus 33.3333% of 2.625.

As a second example let's look at a change that includes negative numbers, where taking the absolute value of V1 in the denominator makes a difference.

What is the percentage change expressed as an increase or decrease for -25 to 25?

Let V1 = -25 and V2 = 25 and plug numbers into our formula:

Saying a 200% change is equivalent to stating a 200% increase.

As a third and final example let's look at another change that includes negative numbers, where taking the absolute value of V1 in the denominator makes a difference.

What is the change expressed as an increase or decrease for -25 to -50?

Let V1 = -25 and V2 = -50 and plug numbers into our formula:

Saying a -100% change is equivalent to stating a 100% decrease.

Step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i