I think it might be 5, because it is a pythagrum triple
Answer:
<u>9x² + 42x + 49</u>
Step-by-step explanation:
<u>Identity</u>
In this case, x = 3x and a = 7, so <u>substitute</u> the values.
- (3x + 7)²
- (3x)² + 2(3x)(7) + (7)²
- <u>9x² + 42x + 49</u>
Answer: -30
Step-by-step explanation: trust -3 times 5 times 2 equals -30
Answer:
parabola
Step-by-step explanation:
Answer:
math error ...............