Question

Solve -5m2 = -405.

If entering more than one answer, separate the numbers with a comma. So an answer of "9 and 1" would be entered as "9, 1" or "1, 9" (no quotes).

Answer 1

To solve -5m^2 = -405, we can start by isolating the variable m^2 by dividing both sides by -5:

m^2 = 81

Next, we can take the square root of both sides (remembering to include both the positive and negative square roots since m^2 can be positive or negative):

m = ±9

Therefore, the solutions to the equation -5m^2 = -405 are m = -9 and m = 9.