Question

2g+3b=7& gb=2 for 4g²+9b²​

Answer 1

Answer :

25

Solution:

given, 2g + 3b = 7

squaring both sides, we get,

4g²+9b²+ 12gb = 49

(${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy$)

4g²+9b²+ 24 = 49 ( given, gb = 2)

so,

4g²+9b² = 25

Answer 2

Answer:

25

Step-by-step explanation:

(2g+3b)^2=4g^2+9b^2+12gb