Question

(х+4)в квадрате-х в квадрате=2х+1

Answer 1

 

$(x+4)^2-x^2=2x+1$

$x^2+8x+16-x^2=2x+1$

$8x-2x=1-16$

$6x=-15$

$x=-frac{15}{6}$

$x=-2frac{1}{2}$

 

 

 

 

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Answer 2

$(x+4)^{2}-x^{2}=2x+1<var>$

$x^{2}+8x+16-x^{2}-2x-1=0<var></var>$

$6x+15=0$

$</var>x=-2.5</var>$

Ответ -2,5