Question

Evaluate 2 - 3m - m^2 when m = -3 Please work it out step by step because I don't know where to start!

Answer 1

start by placing -3 into m like this
2 - 3(-3) - (-3)^2

Answer 2

Try to use parenthesis to separate the negative. It might make it clearer

Answer 3

Okay I've got that part

Answer 4

now (-3)^2 equals what

Answer 5

9

Answer 6

-9

Answer 7

But isnt a negative times a negative a positive?

Answer 8

wait your right my cal was being stupid

Answer 9

Oh okay

Answer 10

so now you have
2 - 3(-3) - (-9)
so now can you solve

Answer 11

This is incorrect.

Answer 12

I'm seeing how the answer is 2 now. But I just don't why it ends up being 2 - 9 + 9. I keep getting 2 - 9 - 9

Answer 13

2 - 3(-3) - (9)

Answer 14

so (-3)^2 = 9 @qpHalcy0n

Answer 15

Correct.

Answer 16

-3 * -3 = 9

Answer 17

So -3 * -3 = 9, this cancels with the -9 leaving 2.

Answer 18

So because the 9 changed to positive you have to put a + sign after 2?