Question

if X + y = 8 and x y = 3* 3 / 4 find the value of x minus y​

Answer 1

Step-by-step explanation:

x-8 ; y-5 okk.

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Answer 2

Answer:

$x - y = \sqrt{55}$

Step by step solution:

$x + y = 8$

$xy = \frac{9}{4}$

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy$

$64 = {x}^{2} + {y}^{2} + \frac{9}{2}$

${x}^{2} + {y}^{2} = 64 - \frac{9}{2}$

$x - y = \sqrt{( {x}^{2} + {y}^{2} - 2xy)}$

$x - y = \sqrt{( 64 - \frac{9}{2} - \frac{9}{2} )}$

$x - y = \sqrt{( 64 - 9 )}$

$x - y = \sqrt{55}$

hope it helps ♥️