Question

solue by completing square method 4y² + 7 = 12y.​

Answer 1

Answer:

i don't know

Step-by-step explanation:

Answer 2

Answer:

y = (3 +√2 ) / 2

Step-by-step explanation:

4y^2 + 7 = 12y

or , 4y^2 - 12y +7 =0

or , 16 ( 4y^2 -12y +7 )=0

or , 64y^2 - 192y + 112 =0

or , 64 y^2 - 2.8y.12 + (-12^2) - (-12^2) + 112 =0

or , (8y-12 )^2 = 144 - 112

or , 8y - 12 = √32

or , 8y = 12 + √32

or , y = (12 + 4√2)/8

or , y = { 4 ( 3 + √2 )}/ 8

or y = (3+√2) /2