Question

Calcule a expressão algebrica 
-3+√3²-4*2(-2)
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2*2

Answer 1

Olá.

$\mathsf{\dfrac{-3+\sqrt{3^2-4\cdot2\cdot(-2)}}{2\cdot2}=}\\\\\\ \mathsf{\dfrac{-3+\sqrt{9-4\cdot(-4)}}{4}=}\\\\\\ \mathsf{\dfrac{-3+\sqrt{9+16}}{4}=}\\\\\\ \mathsf{\dfrac{-3+\sqrt{25}}{4}=}\\\\\\ \mathsf{\dfrac{-3+5}{4}=}\\\\\\ \mathsf{\dfrac{2}{4}=}\\\\\\ \boxed{\mathsf{\dfrac{1}{2}=0,5}}$

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Bons estudos.