What is expand (x+y=1,2)(x-2y=16) ?

The solution to expand (x+y=1,2)(x-2y=16) is x^2-2xy=16

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expand (x+y=1,2)(x-2y=16)

expand

(x + y = 1, 2) (x - 2 y = 16)

x^{2} - 2 x y = 16

Solution steps

(x + y = 1, 2) (x - 2 y = 16)

= (x + 1 \cdot 2 =, y) (x - 2 \cdot 16 = y)

Apply FOIL method:

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

a = x, b = y = 1, 2, c = x, d = - 2 y = 16

xx + x (- 2 y = 16) + y = 1, 2 x + y = 1, 2 (- 2 y = 16)

Apply minus-plus rules

+ (- a) = - a

xx - 2 x y = 16 + y = 1, 2 x - y = 1, 2 \cdot 2 y = 16

Expand

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

x^{2} - 2 x y = 16

(t^{\frac{1}{2}} + 6) (t + 9)

(2 5 - 3) \cdot (25 - 7)

(1 + 0.003 e^{0.8 t})^{2}

8 v - 4 (v + 8 = 8)

x + 3 (x^{2} - 4)

What is expand (x+y=1,2)(x-2y=16) ?
The solution to expand (x+y=1,2)(x-2y=16) is x^2-2xy=16