Answer:
By a theorem we learned, i. and ii. are valid under the assump- tion that the sequences (a n)1 n=1and (b n) 1 n=1are convergent. For iii.]
Step-by-step explanation:
(2x+3)(2x+3) is the answer. Multiply contents of brackets on each other so, 4x+6x+6x+9=4x^2+12x+9
Here you go! Hope this helps..