70.1k views
2 votes
How to solve 7=2(r+1)^2-3

User Ticallian
by
7.3k points

1 Answer

6 votes

Add 3 to both side:

10 = 2(r+1)^2

Divide both sides of the equation by 2:

5 = (r+1)^2

Take the square root of both sides:

√5 = r+1

Subtract 1 from both sides :

√5 - 1 = r

.

User Igor Serebryany
by
8.3k points

No related questions found