Answers edited by Ahmed Elnaiem

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• How does power change with voltage?
  
• How do you prove: #cosx- (cosx/(1-tanx))= (sinxcosx)/(sinx-cosx)#?
  
• If a swimmer swims 85.4 yards in 5 minutes. How many meters will he swim in 70.0 seconds?
  
• How do you solve #\frac{3x^2+2x-1}{x^2-1}=-2# using cross multiplication?
  
• Question #76814
  
• What are notifications on Socratic and how do they work?
  
• Why does photosynthesis need light?
  
• How do I input a cube root?
  
• How do you solve for r in #- \frac{59}{60} = \frac{1}{6} \(- \frac{4}{3} r-5 )#?
  
• How do you solve by completing the square #x^2+8x=9#?
  
• Question #78b52
  
• I have a question about how the answer is rendered. I have noticed that many HTML codes seem to work in the preview of the answer but don't appear the final answer. Why are these blocked?
  
• If #root(3)(3(root(3)x - 1/(root(3)x))) = 2#, then #root(3)x + 1/(root(3)x) =# what?
  
• Why should I write an answer?