Question

4(x+3y)^2-28(x+3y)+49​

Answer 1

Answer:

x+3y=7/2, by solving the given equation

Answer 2

Step-by-step explanation:

4(x + 3y) ² - 28 (x + 3y) + 49

suppose,

(x + 3y) = z

therefore,

4(z)² - 28 (z) + 49

4z² - 14z - 14z + 49

2z(2z - 7) - 7(2z - 7)

(2z - 7) ( 2z - 7)

z = 7/2

we know,

(x + 3y) = z

x + 3y = 7/2

x + 3y - 7/2 = 0

further solve you can get your answer,