SOLUTION: How to solve 2x^2 + 7 = 61 and 5z^2-200 = 0 Thank you very much

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Question 373705: How to solve 2x^2 + 7 = 61 and 5z^2-200 = 0
Thank you very much
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

solve  

2x^2 + 7 = 61

2x^2 = 54

x^2 = 27

x = +- *sqrt (9*3)

x = +-3sqrt%283%29



5z^2-200 = 0

5z^2 = 200 

z^2 = 40

z = +- sqrt(4*10)

z = +- 2%2Asqrt%2810%29