What is expand (x-y=3,)(x+2y=6) ?

The solution to expand (x-y=3,)(x+2y=6) is x^2+2xy=6

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expand (x-y=3,)(x+2y=6)

expand

(x - y = 3,) (x + 2 y = 6)

x^{2} + 2 x y = 6

Solution steps

(x - y = 3,) (x + 2 y = 6)

= (x - 3 =, y) (x + 2 \cdot 6 = y)

Apply FOIL method:

(a + b) (c + d) = a c + a d + b c + b d

a = x, b = - y = 3,, c = x, d = 2 y = 6

xx + x \cdot 2 y = 6 + (- y = 3,) x + (- y = 3,) \cdot 2 y = 6

Apply minus-plus rules

+ (- a) = - a

xx + 2 x y = 6 - y = 3, x - y = 3, 2 y = 6

Expand

xx + 2 x y : x^{2} + 2 x y

x^{2} + 2 x y = 6

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\frac{( ( s + 1 ) e ^{(- 0.5 s)} )}{( s ( s + 2 ) ( s + 3 ) )}

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What is expand (x-y=3,)(x+2y=6) ?
The solution to expand (x-y=3,)(x+2y=6) is x^2+2xy=6