This is quite basic actually,
208 kmh equals 208,000 meters per hour
This is because a km equates to 1000 meters.
The awnser is (-1+3/x-3/x2+1/x3 )
X-3--19
3,6,9,12,15,18
And they don’t have a 19
Answer:
The perfect -square trinomial
(9y+7)²
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given polynomial equation
81 y² + 126 y +49
⇒ 9² y² + 2(9)(7)y + 7²
⇒ (9y)² + 2(9)(7)y +7²
we will use formula
(a+b)² = a² + 2ab +b²
⇒ (9y+7)²
<u><em>Final answer:-</em></u>
The perfect -square trinomial
(9y+7)²