What is expand (2x+y=6,)(ax-y=7) ?

The solution to expand (2x+y=6,)(ax-y=7) is 2ax^2-2xy=7

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expand (2x+y=6,)(ax-y=7)

expand

(2 x + y = 6,) (a x - y = 7)

2 a x^{2} - 2 x y = 7

Solution steps

(2 x + y = 6,) (a x - y = 7)

= (2 x + 6 =, y) (a x - 7 = y)

Apply FOIL method:

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

a = 2 x, b = y = 6,, c = a x, d = - y = 7

2 x a x + 2 x (- y = 7) + y = 6, a x + y = 6, (- y = 7)

Apply minus-plus rules

+ (- a) = - a

2 a xx - 2 x y = 7 + y = 6, a x - y = 6, y = 7

Expand

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

2 a x^{2} - 2 x y = 7

\frac{3}{[ ( x + 8 ) ( x - 2 ) ]}

x (3 x y - 6 y^{3} + 6) d x + (x^{3} - 6 x^{2} y^{2} - 1) d y

(- 5, - 7, 1) l e f t (1, 0, - 3)

(\frac{9}{x - 12} + 3 (100 - x)) (x - 12)

\frac{a x ^{2} + b x + c}{( x ^{2} + 1 ) ( x - 3 )}

What is expand (2x+y=6,)(ax-y=7) ?
The solution to expand (2x+y=6,)(ax-y=7) is 2ax^2-2xy=7