What is expand (3.92-2x)^2 ?

The solution to expand (3.92-2x)^2 is 15.3664-15.68x+4x^2

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expand (3.92-2x)^2

expand

(3.92 - 2 x)^{2}

15.3664 - 15.68 x + 4 x^{2}

Solution steps

(3.92 - 2 x)^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(3.92 - 2 x)^{2} = 3.9 2^{2} - 2 \cdot 3.92 \cdot 2 x + (2 x)^{2}

= 3.9 2^{2} - 2 \cdot 3.92 \cdot 2 x + (2 x)^{2}

Simplify

3.9 2^{2} - 2 \cdot 3.92 \cdot 2 x + (2 x)^{2} : 15.3664 - 15.68 x + 4 x^{2}

= 15.3664 - 15.68 x + 4 x^{2}

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What is expand (3.92-2x)^2 ?
The solution to expand (3.92-2x)^2 is 15.3664-15.68x+4x^2