Math, asked by ponnunpallie, 1 year ago

Simplify: 4√20 + ½ √245 - √405

Answers

Answered by pathakritu

4underroot20+1/2underroot245- underroot405 = 4(underroot 4*5)+0.5(underroot5*7*7)-(underroot 5*9*9) = 4*2underroot5 + 7*0.5underroot5 - 9underroot5= 8underroot5+3.5underroot5 - 9underroot5= underroot5(8+3.5-9)= 2.5underroot 5 = (5/2)underroot5

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