Question

Urgent! please help {brainliest}

Answer 1

Answer:

$- {5c}^{4} \times ( { - c}^{8} ) \\ \\ = 5 \{( {c}^{4} ) \times (c {}^{8} ) \}$

from law of indices:

${a}^{n} \times {a}^{m} = {a}^{(n + m)}$

therefore:

$= 5 \{ {c}^{(4 + 8)} \} \\ \\ { \boxed{ = 5 {c}^{12} }}$