Answer :

Sure! Let's expand and simplify the expression [tex]\((x+2)(x+1)\)[/tex] step by step.

1. Apply the distributive property:
To expand [tex]\((x+2)(x+1)\)[/tex], we need to use the distributive property of multiplication over addition. This means multiplying each term in the first binomial by each term in the second binomial.

[tex]\[ (x + 2)(x + 1) = x \cdot (x + 1) + 2 \cdot (x + 1) \][/tex]

2. Distribute each term:
- Distribute [tex]\(x\)[/tex] to both terms inside the parentheses:

[tex]\[ x \cdot (x + 1) = x \cdot x + x \cdot 1 = x^2 + x \][/tex]

- Distribute [tex]\(2\)[/tex] to both terms inside the parentheses:

[tex]\[ 2 \cdot (x + 1) = 2 \cdot x + 2 \cdot 1 = 2x + 2 \][/tex]

3. Combine the results:
Now, combine all the terms obtained from the distribution:

[tex]\[ x^2 + x + 2x + 2 \][/tex]

4. Combine like terms:
Finally, combine the like terms (terms with the same variable raised to the same power):

[tex]\[ x^2 + x + 2x + 2 = x^2 + (x + 2x) + 2 = x^2 + 3x + 2 \][/tex]

So, the expanded and simplified form of [tex]\((x+2)(x+1)\)[/tex] is:

[tex]\[ \boxed{x^2 + 3x + 2} \][/tex]