[ 2c2 + 10c - 48 ] is not a question. It's just an expression that stands for a
number, and we can't tell what the number is until we know what 'c' is.
If you said it was equal to something, then you'd have an equation, and you could
ask "What number does 'c' have to be in order to make this equation true ?"
But without an 'equals' sign ( = ) in it, it's not a question, and has no answer.
If that's (c + 1) squared, (c + 1)(c + 1) = c^2 + 2c + 1
4ac + 2ad + 2bc +bd = 2a*(2c + d) + b*(2c + d) = (2c + d)*(2a + b)
4c+1-5+2c = 6c-4.
It is: 2c+8
Without any information about a or b or c, all that can be said is: a + b + 2c = a + b + 2c Not particularly illuminating!
(b + 2c)(b - c)
6(3r^2 - 14r + 3) and (2c + 1)(c - 9)
4
the greatest common factor of 2c squared times 2c is 2c
a^2b^2c^2 ^2 is squared
If that's (c + 1) squared, (c + 1)(c + 1) = c^2 + 2c + 1
2c + 4 - 3c = -9 + c + 5 -c + 4 = c - 4 -2c = -8 2c = 8 c = 4
c + c + 2c + c + c = 6c
4ac + 2ad + 2bc +bd = 2a*(2c + d) + b*(2c + d) = (2c + d)*(2a + b)
4c+1-5+2c = 6c-4.
It is: 2c+8
Without any information about a or b or c, all that can be said is: a + b + 2c = a + b + 2c Not particularly illuminating!