SOLUTION: Solve these 2 equations using the quadratic formula: 1. 5r^2 - 16 = -3 2. 4v^2 = 21 I don't understand how we can use the quadratic formula if the equation isn't set

SOLUTION: Solve these 2 equations using the quadratic formula: 1. 5r^2 - 16 = -3 2. 4v^2 = 21 I don't understand how we can use the quadratic formula if the equation isn't set

Algebra.Com

Question 639455: Solve these 2 equations using the quadratic formula:
1. 5r^2 - 16 = -3

2. 4v^2 = 21

I don't understand how we can use the quadratic formula if the equation isn't set up as: ax^2 + bx + c = 0. please help! thank you :D
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
1.r=√13,-√13
2.v=√21/2,-√21/2
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