Question

4x²+(b-1)xy+9y² so b=?​

Answer 1

Answer:

13 hope it's the right answer

Answer 2

Answer:

here

a:2&b:3

using identity

a^2+b^2+2ab

(2x)^2+(3y)^2+2(2x)(3y)

4x^2+9y^2+12xy

here (b-1)xy=12xy

b-1=12

b=12+1=13

13

is right answer

please mark as brainlist