What is expand pix(-x+2R) ?

The solution to expand pix(-x+2R) is -pix^2+2pixR

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expand pix(-x+2R)

expand

π x (- x + 2 R)

- π x^{2} + 2 π x R

Solution steps

π x (- x + 2 R)

Apply the distributive law:

a (b + c) = ab + a c

a = π x, b = - x, c = 2 R

= π x (- x) + π x \cdot 2 R

Apply minus-plus rules

+ (- a) = - a

= - π xx + 2 π x R

π xx = π x^{2}

= - π x^{2} + 2 π x R

2 - (- 9)

1 n (\frac{1}{x ^{2}})

(4 + 5 y \cdot sin (x)) d x

\frac{d}{d y} ((x) (- 8 x - 13 y + 39))

\frac{( y + 1 ) ( y - 1 )}{y ^{2} + 1}