Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$-3+(- \frac{ 1 }{ 2 } )+( { \left(-2) \right) }^{ 2 }$$

Answer

1/2

Solution


Remove parentheses.
\[-3-\frac{1}{2}+{(-2)}^{2}\]
Since the power of 2 is even, the result will be positive.
\[-3-\frac{1}{2}+{2}^{2}\]
Simplify  \({2}^{2}\)  to  \(4\).
\[-3-\frac{1}{2}+4\]
Simplify.
\[\frac{1}{2}\]

Decimal Form: 0.5

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