Question

if 2a+3b=7 and ab=2, find 4a^2+9b^2​

Answer 1

Answer:

HeY FriENd HeRe is YoUR AnsWEr :-(2a+3b)²=(7)²4a²+2*2a*3b+9b²= 494a²+12ab+ ... If 2a+3b=7 and ab=2 find 4a2 +9b2.

Answer 2

Answer:

4a²+9b²=25

Step-by-step explanation:

(2a+3b)²=(7)²

4a²+2*2a*3b+9b²=49

4a²+12ab+9b²=49

4a²+12*2+9b²=49

4a²+9b²=49-24

4a²+9b²=25

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