Do negative numbers have positive square roots?

not exactly

Step-by-step explanation:

If you put a negative number in a square root you would end up with an error on the calculator. Thats because you end up with an imaginary number since a negative inside a square root can never be calculated, its simply not possible because in order for a negative number to form, a positive number must always be multiplied to a negative number. So people came up with the concept of i:

= i

So something like can be simplified like:

*

 2 * i

  2i

But if you're talking about squares like exponent wise, then yes

something like will always be positive, but you have to be careful with the parentheses.

There is a difference btw and

= 4 because you are multiplying (-2)(-2)

but

= -4 because you are multiplying -(2)(2)

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

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