Question

If 2a+3b=7and ab=2, find 4a²+9b²​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

-24

Step-by-step explanation:

$(2a+3b)^2\\(2a)^2+(3b)^2+2\times2a\times3b\\4a^2+9b^2+12ab\\4a^2+9b^2+12\times2\\4a^2+9b^2+24=0\\4a^2+9b^2=-24$