What is expand (1,-1)y(-1,-5) ?

The solution to expand (1,-1)y(-1,-5) is -1*y,1,-1*y,5+1*1*y,1*5

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expand (1,-1)y(-1,-5)

expand

(1, - 1) y (- 1, - 5)

- 1 \cdot y, 1, - 1 \cdot y, 5 + 1 \cdot 1 \cdot y, 1 \cdot 5

Solution steps

(1, - 1) y (- 1, - 5)

= (1, - 1) (- 1, - 5) y

Expand

(1, - 1) (- 1, - 5) : - 1, 1, - 1, 5 + 1 \cdot 1, 1 \cdot 5

= y (- 1, 1, - 1, 5 + 1 \cdot 1, 1 \cdot 5)

Expand

y (- 1, 1, - 1, 5 + 1 \cdot 1, 1 \cdot 5) : - 1 \cdot y, 1, - 1 \cdot y, 5 + 1 \cdot 1 \cdot y, 1 \cdot 5

= - 1 \cdot y, 1, - 1 \cdot y, 5 + 1 \cdot 1 \cdot y, 1 \cdot 5

(3, - 4) x (3, 9)

\frac{3 ( 144 + 9 6 )}{125}

(x + 1) d y - [3 y]

\frac{5 ( 3 + 2 x )}{2 ( 5 - 4 x )}

\frac{x - 3 ( 2 y - z )}{2 x y}

What is expand (1,-1)y(-1,-5) ?
The solution to expand (1,-1)y(-1,-5) is -1*y,1,-1*y,5+1*1*y,1*5