Question

The real number x and y are such that

x+y=4
x^2+y^2=22
x^4=y^4-176√7

Compute x-y

Answer 1

Answer:

see pic u can get

Step-by-step explanation:

Applying the formula

${a}^{2} - {b}^{2} = (a + b)(a - b)$

two times

u can get

$x - y = - 2 \sqrt{7 } = - \sqrt{28} = - 5.29150262$