Question

(-2x^4y^5)^3 (-3x^3y^)^/(-12x^10y^10)

Answer 1

(-2x^4y^5)^3 (-3x^3y^2)^2/(-12x^10y^10)

=-8x^12y^15*9x^6y^4/(-12x^10y^10)

=-72x^18y^19/(-12x^10y^10)

=6x^8y^9

a^3*a^3+(-2a^3)^+(-a^)^3

=a^6+4a^6-a^6

=4a^6

5^k-3=1

log5^k-3=log1

(k-3)log5=0

k-3=0

k=3

5^k-3=1

5^k-3=5^0

k-3=0

k=3