Question

explain please .this sum​

Answer 1

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By Pythagoras theorem :-

$\implies$ $AC^{2}$=$AB^{2}$+$BC^{2}$

$\implies$ $AC^{2}$=$4^{2}$+$3^{2}$

$\implies$ $AC^{2}$=$16$+$9$

$\implies$AC = √25

$\implies$AC = 5..

So the value of x is 5

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