What is expand (6x+5y=-1,7)(5x-12y=2) ?

The solution to expand (6x+5y=-1,7)(5x-12y=2) is 30x^2-72xy=2

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expand (6x+5y=-1,7)(5x-12y=2)

expand

(6 x + 5 y = - 1, 7) (5 x - 12 y = 2)

30 x^{2} - 72 x y = 2

Solution steps

(6 x + 5 y = - 1, 7) (5 x - 12 y = 2)

= (6 x + 5 = y - 1 \cdot 7,) (5 x - 12 \cdot 2 = y)

Distribute parentheses

6 x \cdot 5 x + 6 x (- 12 y = 2) + 5 y = 5 x + 5 y = (- 12 y = 2) + (- 1, 7) \cdot 5 x + (- 1, 7) (- 12 y = 2)

Apply minus-plus rules

+ (- a) = - a, (- a) (- b) = ab

6 \cdot 5 xx - 6 \cdot 12 x y = 2 + 5 y = 5 x - 5 y = 12 y = 2 - 1, 7 \cdot 5 x + 1, 7 \cdot 12 y = 2

Expand

6 \cdot 5 xx - 6 \cdot 12 x y : 30 x^{2} - 72 x y

30 x^{2} - 72 x y = 2

\frac{5 x ^{2} y ( x y z ^{6} + 3 x ^{4} y ^{4} z ^{4} - 5 )}{z ^{2}}

1 + \frac{1}{2} (e^{- \frac{x}{20}} - e^{\frac{x}{20}})

\frac{- u - 1}{2 ( u ^{2} - u )}

- 4 y (x + \frac{( y - z )}{2})

\frac{x ( x - 1 ) ( x - 12 ) ( x - 21 ) ( x - 23 ) ( x - 24 )}{40824}

What is expand (6x+5y=-1,7)(5x-12y=2) ?
The solution to expand (6x+5y=-1,7)(5x-12y=2) is 30x^2-72xy=2