Question

x2+2x+

Answer 1

1 perhaps???

Answer 2

Yes. @angela210793 is right. Let me go for the explanation.

Answer 3

i am not sure wht she's looking for O.o

Answer 4

\(x^2 + 2x + \underline{}\)

First split this into something like:

\(x^2 + 2 \times x \times \underline{} + \underline{}\)

For the record - \(( a + b)^2 = a^2 + 2ab + b^2\)

So

\( \color{Black}{\Rightarrow 2 \times x \times \underline{} = 2x }\)

Divide 2x from both sides

\( \color{Black}{\Rightarrow \underline{} = 1 }\)