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Exercise

$\cos^2\left(x\right)=-\frac{1}{2}$

Step-by-step Solution

1

Cuando elevamos una expresión al cuadrado nunca podemos obtener un número negativo, por lo tanto, la ecuación no tiene solución en el plano real

No hay solución

Final answer to the exercise

No hay solución

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Similar Questions Solved

$\left(2x+5\right)\cdot\left(2x-5\right)$

$\left(x+3\right)\left(x-3\right)$

$\left(3x+4\right)\cdot\left(3x-4\right)$

$\left(2x+5y\right)\left(2x-5y\right)$

$\left(x+1\right)\left(x-1\right)$

$\left(1-8xy\right)\left(1+8xy\right)$

$\left(2a+5\right)\left(2a-5\right)$

Main Topic: Special Products

Special products is the multiplication of algebraic expressions that follow certain rules and patterns, so you can predict the result without necessarily doing the multiplication.

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