(11a-2b)(4c+6d+15)-(-13b-3c)(20-11a-7d)

asked by guest
on Dec 28, 2024 at 8:59 am



You asked:

Evaluate the expression: \(\left(11 a - 2 b\right) \left(4 c + 6 d + 15\right) - \left(-\left( 13 b \right) - 3 c\right) \left(20 - 11 a - 7 d\right)\)

MathBot Answer:

Evaluated



\(\displaystyle \left(11 a - 2 b\right) \left(4 c + 6 d + 15\right) - \left(-\left( 13 b \right) - 3 c\right) \left(20 - 11 a - 7 d\right) = \left(11 a - 2 b\right) \left(4 c + 6 d + 15\right) - \left(- 13 b - 3 c\right) \left(- 11 a - 7 d + 20\right) \)


Expanded

\[\left(11 a - 2 b\right) \left(4 c + 6 d + 15\right) - \left(-\left( 13 b \right) - 3 c\right) \left(20 - 11 a - 7 d\right) = - 143 a b + 11 a c + 66 a d + 165 a - 8 b c - 103 b d + 230 b - 21 c d + 60 c\]


Factored

\[\left(11 a - 2 b\right) \left(4 c + 6 d + 15\right) - \left(-\left( 13 b \right) - 3 c\right) \left(20 - 11 a - 7 d\right) = - 143 a b + 11 a c + 66 a d + 165 a - 8 b c - 103 b d + 230 b - 21 c d + 60 c\]