Answer:
19.[tex]-\frac{5}{6}^{3}[/tex]
20.[tex]s^{2} *7^{3}[/tex]
21.[tex]4^{2} * b^{4}[/tex]
22. 97.2
23. 234
Step-by-step explanation:
[tex]k^{4}*m\\ 3^{4} *\frac{5}{6}\\ 81*\frac{5}{6}=97.2[/tex]
[tex](c^{3}+ d^{4})^{2} -(c+d)^3\\(-1^3+2^4)^2-(-1^3+2^3)\\-1+256+1+8\\=234[/tex]
I hope this helps.
