Answer:
[tex] {c}^{27} {d}^{54} [/tex]
Explanation:
[tex]{c}^{4 \times 3} {d}^{5 \times 3} \times {c}^{2 \times 6} {d}^{7 \times 6} [/tex]
[tex] {c}^{12} d {}^{15} \times {c}^{12} {d}^{42} [/tex]
[tex] {c}^{12 + 15} {d}^{12 + 42} [/tex]
[tex] {c}^{27} {d}^{54} [/tex]
