Question

reduza a uma so potencia [(-7)^2]^4×[(-7)^5÷(-7)^3]

Answer 1

$\ \ \ [(-7)^2]^4 \times[(-7)^5 :(-7)^3]\\ \\= (-7)^{2\cdot4} \times(-7)^{5-3}\\ \\= (-7)^8 \times(-7)^2\\ \\= (-7)^{8+2}\\ \\= (-7)^{10}\\ \\= 7^{10}$