Answer:
last option
x² + 81 = x² + 20x + 100
Step-by-step explanation:
squaring both sides
using the identity
(a + b)² = a² + b² + 2ab
for (x + 10) ²
<h3>hence, option D</h3>
The answer is
A. 1.7320508
Answer: 73
Step-by-step explanation:
You use the bowtie method to get the answer for this problem. This is where you do 4/15 and x/273. You multiply 4 by 273 and x by 15. Resulting in the answers 1092 and 15x. To find the value of x, you divide 1092 by 15. and get 72.8. I rounded up to 73.
I think this is the answer, though you might need to recheck it