Math, asked by ananyasinha8529, 11 months ago

If x is equal to 4 minus root 15 then what is the value of x + 1 by X

Answers

Answered by tanejakca
0
X=4-15^1:2
X-4 sq =15
Answered by nathanvictoria66
0

x = 4-√15

x +  \frac{1}{x}  = 4 -  \sqrt{15}  +  \frac{1}{4 -  \sqrt{15} }

 =  \frac{ {(4 -  \sqrt{15}) }^{2}  + 1 }{4 -  \sqrt{15} }

 =  \frac{(16 + 15 - 8 \sqrt{15}  + 1)}{4 -  \sqrt{15} }

 =  \frac{(32 - 8 \sqrt{15})(4 +  \sqrt{15}) }{(4 - \sqrt{15} )(4 +  \sqrt{15})  }

 =\frac{128 + 32 \sqrt{15} - 8 \sqrt{15} + 120  }{16 - 15}

 = 128 + 24 \sqrt{15}  + 120

 = 228 + 24 \sqrt{15}

Hope this is helpful ❤

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