How does 12x^5 + 5x^6 +1 equal -63 when x= -2? Please explain

Watching an exam solutions video on stationary points, and he substitutes x= -2 into y=12x^5 + 5x^6 + 1, which gives him -63 as the value for y.

When I do this is situation though, I get an answer nothing like -63.

I was doing 12(-2^5) + 5(-2^6) + 1, which didn't give me -63. I also tried (12*-2)^5 + (5*2)^6 + 1, which again, didn't give me -63.

Can someone please walk me through how you get y=-63 for the answer of that equation when you substitute x=-2?

Would be a real relief it's been stressing me out all day.

Thanks

Well you have 12*(-2)^5 + 5(-2)^6 +1
= 12*-32 +5*64 +1
= -384 + 320 + 1
= -63


(Make sure when you do -2 to a power the -2 is in brackets like (-2)^5 not -2^5

If you were doing a positive number, ie 2^5, would the 2 need to be in brackets so it would be (2)^5, or does it only need to be in brackets if its a negative number?

If you were doing a positive number, ie 2^5, would the 2 need to be in brackets so it would be (2)^5, or does it only need to be in brackets if its a negative number?