What is expand (9x-2y=1,1)(5)(4x-5y=9)(-2) ?

The solution to expand (9x-2y=1,1)(5)(4x-5y=9)(-2) is -360x^2+450xy=9

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expand (9x-2y=1,1)(5)(4x-5y=9)(-2)

expand

(9 x - 2 y = 1, 1) (5) (4 x - 5 y = 9) (- 2)

- 360 x^{2} + 450 x y = 9

Solution steps

(9 x - 2 y = 1, 1) (5) (4 x - 5 y = 9) (- 2)

= (5) (- 2) (9 x - 2 \cdot 1 \cdot 1 =, y) (4 x - 5 \cdot 9 = y)

Expand

(9 x - 2 y = 1, 1) (4 x - 5 y = 9) : 36 x^{2} - 45 x y = 9

= (5) (- 2) (36 x^{2} - 45 x y = 9)

Expand

(5) (- 2) (36 x^{2} - 45 x y = 9) : - 360 x^{2} + 450 x y = 9

- 360 x^{2} + 450 x y = 9

\frac{( S + 1.5 ) ( S - 3 )}{( S + 3 ) ( S + 2 ) ( S + 1 )}

\frac{d}{d t} ((B) (B + B t^{2}))

cos (3 t) U (t - \frac{7 π}{6})

\frac{x ^{2} + 9}{( x + 9 ) ^{2}}

\frac{d}{d x} (3 + (\frac{2}{m ( x + 2 )}))

What is expand (9x-2y=1,1)(5)(4x-5y=9)(-2) ?
The solution to expand (9x-2y=1,1)(5)(4x-5y=9)(-2) is -360x^2+450xy=9