Question

por favor me ajudem​

Answer 1

Explicação passo-a-passo:

a) 3 × (-6) + 5

   -18 + 5 = -13

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b) 2 × (-3) + 7 × $\frac{1}{2}$

   -6 + $\frac{7}{2}$

   $\frac{-12+7}{2}=-\frac{5}{2}$

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c) $(-\frac{1}{2})^{2}+3$ × $(-\frac{1}{2})=\frac{1}{4}-\frac{3}{2}=\frac{1-6}{4}=-\frac{5}{4}$

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d) (-5)² - 2 × (-5) × 2 + 2² = 25 + 20 + 4 = 49