Question

(5-9)³*(10^10:12^9)*(-4)^-2

Answer 1

$(5-9)^3*(10^{10}:10^{9})*(-4)^{-2} \\ \\ (-4)^{-2}= \frac{1}{(-4)^2} = \frac{1}{16} =0,0625 \\ \\ \\ (-4)^3*(10^{10-9})*0,0625 \\ (-64)*10^1*0,0625 \\ (-64)*10*0,0625 \\ -40$

Espero ter ajudado. Valeu!

Answer 2

(-4)³×(_10^10_)×__1_
             12^9        (-4)²
(-64)×(_2^10×5^10_×_1_
             4^9×3^9        16
(-4)×_(2^10×5^10_)×_1_
             2^18×3^9       1 
- _4×5^10_
    2^8×3^9
- ___5^10___
     2^6×3^9