Question

If ( x + 7 ) is mean proportion between ( x + 5 ) and ( x + 10 ) .The value of x is​

Answer 1

Step-by-step explanation:

Solution



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According to the given condition-

  x+5 = Sq root[(x+2)(x+9)]

 (x+5)² = (x+2)(x+9)

 x²+25+10x = x²+19+11x

 25+10x = 11x+19

 x=6.