Question

Elimination Method
3x + y = 5
x + y = 3
​

Answer 1

Answer:

Given

Step-by-step explanation:

(3x +y) (x+y) = (5)(3)

${3x}^{2}$+3xy + yx + y2 = 15

${3x}^{2}$+4xy+y2 = 15

we use the quadratic formula :

${3x}^{2}$+ y2 + 4xy = 15

hence required answer

Answer 2

Answer:

(3x +y) (x+y) = (5)(3)

{3x}^{2}3x

2

+3xy + yx + y2 = 15

{3x}^{2}3x

2

+4xy+y2 = 15

we use the quadratic formula :

{3x}^{2}3x

2

+ y2 + 4xy = 15

hence required answer

Step-by-step explanation:

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