Answer:
a² + 2ab + b²
Step-by-step explanation:
(a + b)² = (a + b)(a + b)
multiply each term in the second factor by each term in the first factor
=a(a + b) + b(a + b) ← distribute both parenthesis
= a² + ab + ab + b² ← collect like terms
= a² + 2ab + b²
<span>8.5k+7-7.5k=9
first combine like terms </span>8.5k and -7.5k to get 1k or just k
k+7=9
subtract 7 from both sides to isolate k
k = 2
Answer and Step-by-step explanation:
This is the correct matching:
1. Coefficient: The number in front of a variable in a term.
2. Constant: A number; a term containing no variables.
3. Arithmetic sequence: A set of numbers where the difference is the same between any two consecutive terms.
4. Closed circle: A circle filled in to show that the point is a part of the solution set.
5. Algebraic expression: An expression involving one or more variable terms.
6. Common ratio: The ratio of a term to the previous term in a geometric sequence.
7. Common difference: The difference between any two consecutive terms of an arithmetic sequence.
A+B+C =180
7x+49+5y=180 ---> 7x+5y=131
7(15) +49+5(15)=180
180=180
(15)+7(15)+41=A
161=A
2(15)+13=B
43=B
B=C
43=C
A=161
B=43
C=43
Answer:
The answer is B and E.
Step-by-step explanation: