Question

factorize 28c^2d^2-21c^2d​

Answer 1

$28 {c}^{2} {d}^{2} - 21 {c}^{2} d \\ \\ = 7 \times 4 \times {c}^{2} \times {d}^{2} - 7 \times 3 \times {c}^{2} \times d \\ \\ = 7 {c}^{2} d \big(4d - 3 \big)$

Answer 2

Step-by-step explanation:

$\begin{lgathered}28 {c}^{2} {d}^{2} - 21 {c}^{2} d \\ \\ = 7 \times 4 \times {c}^{2} \times {d}^{2} - 7 \times 3 \times {c}^{2} \times d \\ \\ = 7 {c}^{2} d \big(4d - 3 \big)\end{lgathered}$