What is expand (x)(20-2x)(20-2x) ?

The solution to expand (x)(20-2x)(20-2x) is 400x-80x^2+4x^3

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expand (x)(20-2x)(20-2x)

expand

(x) (20 - 2 x) (20 - 2 x)

400 x - 80 x^{2} + 4 x^{3}

Solution steps

(x) (20 - 2 x) (20 - 2 x)

Apply rule:

(a) = a

(x) = x

= x (20 - 2 x) (20 - 2 x)

Apply FOIL method

(20 - 2 x) (20 - 2 x) : 400 - 80 x + 4 x^{2}

= x (400 - 80 x + 4 x^{2})

Apply the distributive law:

m (a + b + c) = ma + mb + m c

x (400 - 80 x + 4 x^{2}) = x \cdot 400 + x (- 80 x) + x \cdot 4 x^{2}

= x \cdot 400 + x (- 80 x) + x \cdot 4 x^{2}

Simplify

x \cdot 400 + x (- 80 x) + x \cdot 4 x^{2} : 400 x - 80 x^{2} + 4 x^{3}

= 400 x - 80 x^{2} + 4 x^{3}

\frac{2 - tan ( x ) + x sec ^{2} ( x )}{( 2 - tan ( x ) ) ^{2}}

2 x^{2} - (1 + 23) x + 3

\frac{3 ( x - 4 )}{5 ( x - 3 )}

(2 + 1) (3 - 1)

\frac{s ^{2}}{( s - 1 ) ( s ^{3} - s ^{2} - 4 s + 4 )}

What is expand (x)(20-2x)(20-2x) ?
The solution to expand (x)(20-2x)(20-2x) is 400x-80x^2+4x^3