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The sum of two terms multiplied by their difference is equal to the square of the first term minus the square of the second term. In other words: $(a+b)(a-b)=a^2-b^2$.
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$derivdef\left(x^2-\left(y+2\right)^2\right)$
Learn how to solve problems step by step online. Find the derivative of (x+y+2)(x-y+-2) using the definition. The sum of two terms multiplied by their difference is equal to the square of the first term minus the square of the second term. In other words: (a+b)(a-b)=a^2-b^2.. Expand the expression \left(y+2\right)^2 using the square of a binomial: (a+b)^2=a^2+2ab+b^2. Simplify the product -(y^{2}+4y+4). Simplify the product -(4y+4).