1. **State the problem:** Solve the expression $3 - 2(x-1)^2 + \frac{1}{2}(x+1)$ and simplify it.
2. **Recall the formulas and rules:**
- Square of a binomial: $(a-b)^2 = a^2 - 2ab + b^2$
- Distributive property: $a(b+c) = ab + ac$
- Combine like terms to simplify expressions.
3. **Expand the squared term:**
$$ (x-1)^2 = x^2 - 2x + 1 $$
4. **Substitute back and distribute:**
$$ 3 - 2(x^2 - 2x + 1) + \frac{1}{2}(x+1) $$
$$ = 3 - 2x^2 + 4x - 2 + \frac{1}{2}x + \frac{1}{2} $$
5. **Combine like terms:**
Constants: $3 - 2 + \frac{1}{2} = 1 + \frac{1}{2} = \frac{3}{2}$
Linear terms: $4x + \frac{1}{2}x = \frac{8}{2}x + \frac{1}{2}x = \frac{9}{2}x$
Quadratic term: $-2x^2$
6. **Final simplified expression:**
$$ -2x^2 + \frac{9}{2}x + \frac{3}{2} $$
This is the simplified form of the given expression.
Expression Simplification 360402
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