Question

2. Justify each step of the proof.

Conjecture: If 2(x2 + 5) = 60, then x is 5 or –5.


Thanks for the help:)

Answer 1

divide both sides by 2 first

Answer 2

what do you get?

Answer 3

you get x^2+5=30

Answer 4

now subtract 5 both sides

Answer 5

you'll get x^2=25

Answer 6

in order to get rid of the square you need to square root it. So square root both sides

Answer 7

x= +/-5
hope it helped you.

Answer 8

@kbuggs.97

Answer 9

ya kind of but what is each step called like the first one would be distributive property, what would the rest be?

Answer 10

Just say division property if it is division or sqaure root property if you sqaure root. Is that simple. I think its better than leaving it blank. :P

Answer 11

@kbuggs.97

Answer 12

okay thanks I think that helps!