Use the square root property to determine all real solutions for each of the following equations.

4r2+500=0\displaystyle {4}{r}^{{2}}+{500}={0}

 r=\displaystyle {r}=  

 

3b2−225=0\displaystyle {3}{b}^{{2}}-{225}={0}

b=\displaystyle {b}=  

Give exact solutions (don't use decimals), and separate multiple solutions with commas. If there are no real solutions, type DNE.

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