Issolvi 3a*ab-2a^2*(-4b)-8*(2a^2b)=

$$3 a \cdot a b - 2 a ^ { 2 } \cdot ( - 4 b ) - 8 \cdot ( 2 a ^ { 2 } b ) =$$

Evalwa

$$-5ba^{2}$$

Passi tas-Soluzzjonijiet

Immultiplika a u a biex tikseb a^{2}.

$$3a^{2}b-2a^{2}\left(-4\right)b-8\times 2a^{2}b$$

Immultiplika 2 u -4 biex tikseb -8.

$$3a^{2}b-\left(-8a^{2}b\right)-8\times 2a^{2}b$$

L-oppost ta' -8a^{2}b huwa 8a^{2}b.

$$3a^{2}b+8a^{2}b-8\times 2a^{2}b$$

Ikkombina 3a^{2}b u 8a^{2}b biex tikseb 11a^{2}b.

$$11a^{2}b-8\times 2a^{2}b$$

Immultiplika 8 u 2 biex tikseb 16.

$$11a^{2}b-16a^{2}b$$

Ikkombina 11a^{2}b u -16a^{2}b biex tikseb -5a^{2}b.

$$-5a^{2}b$$

Iddifferenzja w.r.t. b

$$-5a^{2}$$