Question

please can someone check if I am correct? PLEASE WILL GIVE MEDAL.
2. Justify each step of the proof.

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

1. 2(x2 + 5) = 60 1. Given

2. 2x2 + 10 = 60 2.Distrubutive law

3. 2x2 = 50 3. Equals subtracted from equal, remainders are equal.

4. x2 = 25 4. Equals divided by equals quotients are equal.

5. x = ±5 5. Square roots of equals are equal.

Answer: x = ±5

Answer 1

@Hero @dan815 @christena710 @Compassionate @superhelp101 @LearningIsAwesome

Answer 2

Looks good to me!

Answer 3

Thanks :)