What is expand (4x+7y=3,7)(3x-y=16) ?

The solution to expand (4x+7y=3,7)(3x-y=16) is 12x^2-4xy=16

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expand (4x+7y=3,7)(3x-y=16)

expand

(4 x + 7 y = 3, 7) (3 x - y = 16)

12 x^{2} - 4 x y = 16

Solution steps

(4 x + 7 y = 3, 7) (3 x - y = 16)

= (4 x + 7 \cdot 3 \cdot 7 =, y) (3 x - 16 = y)

Apply FOIL method:

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

a = 4 x, b = 7 y = 3, 7, c = 3 x, d = - y = 16

4 x \cdot 3 x + 4 x (- y = 16) + 7 y = 3, 7 \cdot 3 x + 7 y = 3, 7 (- y = 16)

Apply minus-plus rules

+ (- a) = - a

4 \cdot 3 xx - 4 x y = 16 + 7 y = 3, 7 \cdot 3 x - 7 y = 3, 7 y = 16

Expand

4 \cdot 3 xx - 4 x y : 12 x^{2} - 4 x y

12 x^{2} - 4 x y = 16

[x (x + 1)]^{2}

3 x (3 x + 2 x ln (x))

x \cdot 6 x

\frac{( 2 a - b ) ^{2}}{9}

\frac{2 ( d - 2 )}{5}

What is expand (4x+7y=3,7)(3x-y=16) ?
The solution to expand (4x+7y=3,7)(3x-y=16) is 12x^2-4xy=16