Mathematics: Find the solution of the system of equations. 8x+y= -13 −8x−2y=10

Find the solution of the system of equations. 8x+y=

Ответ:

KeyesRaveen

18.03.2022

Mathematics

x=-2 and y=3

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Ответ:

Tok

24.09.2022

Mathematics

$x^2+4x-8=0\\\\\underbrace{x^2+2x\times2+2^2}_{use:(a+b)^2=a^2+2ab+b^2}-2^2-8=0\\\\(x+2)^2-4-8=0\\\\(x+2)^2-12=0\\\\(x+2)^2=12\iff x+2=\sqrt{12}\ or\ x+2=-\sqrt{12}\\\\x=\sqrt{4\times3}-2\ or\ x=-\sqrt{4\times3}-2\\\\x=\sqrt4\times\sqrt3-2\ or\ x=-\sqrt4\times\sqrt3-2\\\\\center\boxed{x=2\sqrt3-2\ or\ x=-2\sqrt3-2}$

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Find the solution of the system of equations.
8x+y= -13
−8x−2y=10

Ответ:

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