Oh, dude, the product of 4A and b is simply 4Ab. It's like when you mix 4 of something with another thing called b, you get 4Ab. It's not rocket science, just some good ol' multiplication.
4a² - b² = (2a + b)(2a - b)
5ab-2ab+4a-b+5b = 3ab+4a+4b
(ab/b) / (4a/5b) =(ab / b) * (5b / 4a) = (5ab2 / 4ab)= 5 / (4b)
They appear to be the equations of two parallel lines in the a-b plane.
The expression is: (4a+b)/(2a-5b)
..
4a² - b² = (2a + b)(2a - b)
5ab-2ab+4a-b+5b = 3ab+4a+4b
(ab/b) / (4a/5b) =(ab / b) * (5b / 4a) = (5ab2 / 4ab)= 5 / (4b)
They appear to be the equations of two parallel lines in the a-b plane.
The expression is: (4a+b)/(2a-5b)
n(2a - b)(2a + b)(4a^2 - 2ab + b^2)(4a^2 + 2ab + b^2)
4a + 3c - 2b - c + a - b = 5a - 3b + 2c
n(2a - b)(2a + b)(4a^2 - 2ab + b^2)(4a^2 + 2ab + b^2)
a+a+a+a+b+b - add the like terms =4a+2b 4a and 2b cannot be added because they are not like terms.
The expression ( 4a + 3b + 2a - b ) can be simplified by combining like terms. First, combine the ( a ) terms: ( 4a + 2a = 6a ). Next, combine the ( b ) terms: ( 3b - b = 2b ). Therefore, the simplified expression is ( 6a + 2b ).
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b