Answer:
4x² - 28xy + 49y²
Step-by-step explanation:
(2x - 7y)²
= (2x - 7yy)(2x - 7y)
Each term in the second factor is multiplied by each term in the first factor, that is
2x(2x - 7y) - 7y(2x - 7y) ← distribute parenthesis
= 4x² - 14xy - 14xy + 49y² ← collect like terms
= 4x² - 28xy + 49y²
Answer:
No
Step-by-step explanation:
The variables are different in both problems. In 2×+7=27, it's 10, while in the other problem, it's 9.
27 doesn't equal 28.
Answer:
Step-by-step explanation:
These are physical measurements, which must be zero or greater. These restrictions are the reason for your having a total of four inequalities.
Answer:
2.56
Step-by-step explanation:
3.2(2.3) – 4.8
Multiply first
7.36 - 4.8
Then subtract
2.56
