Question

find the value of a in 4x^2 + ax +9 = (2x + 3)^2

Answer 1

Answer:

4x²+ax+9 = (2x+3)²

4x²+ax+9 = 4x²+12x+9

4x²-4x²+ax = 12x+9-9

ax = 12x

a = 12x/x

a = 12

hope this helps you !!!