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Exercise

$\cot^4\left(x\right)-2\left(1+cot^2x\right)+a^2$
1

Aplicamos a identidade trigonométrica: $1+\cot\left(\theta \right)^2$$=\csc\left(\theta \right)^2$

$\cot\left(x\right)^4-2\csc\left(x\right)^2+a^2$
Por que é cot(x)^2+1 = csc(x)^2 ?

Final answer to the exercise

$\cot\left(x\right)^4-2\csc\left(x\right)^2+a^2$

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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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