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Calculate the square root of $5$
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$\left(x-4-\sqrt{5}\right)^2$
Learn how to solve special products problems step by step online. Expand the expression (x-4-5^1/2)^2. Calculate the square root of 5. Multiply -1 times \sqrt{5}. Subtract the values -4 and -\sqrt{5}. A binomial squared (difference) is equal to the square of the first term, minus the double product of the first by the second, plus the square of the second term. In other words: (a-b)^2=a^2-2ab+b^2.