Answer:
not really sure for number one
1. 1.56y × 3.9x
2. 4.8x + 9.6y
Answer:
2
Step-by-step explanation:
Since there are four negative signs, we have -1 multiplying each other 4 times, multiplying by positive 2. This is then 1 * 2, which is 2.
The answer is
T2=(P2V2/T1)/P1V1
Answer:
Step-by-step explanation:
its true
Step-by-step explanation:
1. a² - ( b ² - 2bc + c² ) = a ² - b ² + 2bc - c²
2. 8p² - 18 q²
3. 3ab² - c²d + 3ab - b²c²
4. x² - 2x + 1