Answer:
1/2*(x+1)[(6x+5)+(4x+7)}
Step-by-step explanation:
Answer:25.50
Step-by-step explanation:
Because .50 is in the hundreths, and it rounds up to that because it is above 5.
Answer:
14*2
Step-by-step explanation:
x=7 and Y=2
2×7*2
14*2
Answer:
25x^2 -1
Step-by-step explanation:
If you multiply parentheses:
(5x*5x) + (5x*-1) + (1*5x) + (1*-1)
25x^2 - 5x + 5x -1
25x^2 -1
A simpler way is to memorize this formula
(Square1 - square2)= (sqrt of square1- sqrt of square2)*(sqrt of square1 + sqrt of sqaure2)
2 groups of 4 people can answer the different phone lines and 2 people will be leftover.