Question

Se ( -2√3)² é:

(2√3) x (2√3)=

4x√9= 4x3= 12

e se tiver um sinal de - o resultado altera?

Ex: (-2√3)²


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Answer 1

Resposta:

Depende do caso

Explicação passo a passo:

$\left(2\sqrt{3}\right)^2=2^2\left(\sqrt{3}\right)^2=4\left(\sqrt{3}\right)^2=4\cdot \:3=12$

$\left(-2\sqrt{3}\right)^2=\left(2\sqrt{3}\right)^2=2^2\left(\sqrt{3}\right)^2=4\left(\sqrt{3}\right)^2=4\cdot \:3=12$

$-\left(2\sqrt{3}\right)^2=-2^2\left(\sqrt{3}\right)^2=-4\left(\sqrt{3}\right)^2=-4\cdot \:3=-12$

$-\left(-2\sqrt{3}\right)^2=-\left(2\sqrt{3}\right)^2=-2^2\left(\sqrt{3}\right)^2=-4\left(\sqrt{3}\right)^2=-12$