Question

X2+2x+1=0,x=-
${x}^{2} + 2x + 10 \: \: \: \: \: \: x = - 1$
1​

Answer 1

Answer:

${x}^{2} + 2x + 10$

$\huge\mathbb\fcolorbox{white}{purple}{★ By putting x=-1★}$,

${1}^{2} + 2( - 1) + 10$

$1 - 2 + 10$

$9$