What is expand (20-pix)^2 ?

The solution to expand (20-pix)^2 is pi^2x^2-40pix+400

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expand (20-pix)^2

expand

(20 - π x)^{2}

π^{2} x^{2} - 40 π x + 400

Solution steps

(20 - π x)^{2}

Apply Perfect Square Formula:

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

a = 20, b = π x

= 2 0^{2} - 2 \cdot 20 π x + (π x)^{2}

Simplify

2 0^{2} - 2 \cdot 20 π x + (π x)^{2} : 400 - 40 π x + π^{2} x^{2}

= 400 - 40 π x + π^{2} x^{2}

Rewrite in standard form

= π^{2} x^{2} - 40 π x + 400

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What is expand (20-pix)^2 ?
The solution to expand (20-pix)^2 is pi^2x^2-40pix+400