tolong bantu aku bsk di kumpulin

Bisa sampe no 1-4 aja g papa kan???
1.diketahui=
- k= - 6
a. 18 k=18×k
=18×(-6)
=(-108)
b. (-5k)³=(-5×k)³
=(-5×(-6))³
=30³=27000
c. (2k - 9)²=(2×k-9)²
=(2×-6-9)²
=-12+(-9))²
=(-21)²=441
d.-3k²+7k=-3×k+7×k
=-3×(-6)+7×(-6)
=18+(-42)
=-24
e.k³-(k-6)²=-6³-(-6-6)²
=-6³-(-6+(-6))²
=-6³-(-12)²
=-6³+12²
=-18+144
=126
f.3k²+5k-8=3×k²+5×k-8
=3×(-6)²+5×(-6)-8
=3×(-36)+ 5×(-6)-8
=108+(-30)+(-8)
=70
2. a. Diketahui=a=-5
a²-8a=-5²-8×(-5)=-5²-(-40)=-5+40=35
b. Diketahui p=6 ;q=-4
4+3pq²=4×6+3×6×(-4)²=4×6+3×6×(-16)
=24+18×(-16)=24+(-288)=264
c. Diketahui m=-4;n=-8
5m³-2m²n=5×-4³-2×(-4)²×(-8)
=5×(-64)-2×(-64)×(-8)
=-320-(-128)×(-8)=-320-1024=-320+(-1024)
=-1344
d. Diketahui x=-5;y=-3
x²y³+4x³y²=-5²×(-3)³+4×(-5)³×(-3)²
=-25×(-27)+4×(-125)×(-27)
=675+(-500)×(-27)
=13500
3. Diketahui a=-3;b=1;c=-5
a. 2ab+3bc-4ac=2×(-3)×1+3×1×(-5)-4×(-3)×(-5)
=6+(-15)-60=-9+(-60)=-69
b. (2ab-c²)²=2×-3×1-(-5)²) ²=(-6+5²)²=(-6+25)²
=19²=361
c. ab²+bc²-ac²=-3×1²+1×(-5)²-(-3)×(-5)²
=-3+(-25)-125
=-3+(-25)+(-125)=-153
d. 2a(a²+3b³-2c²)=2×(-3)×((-3)²+3×1³-2×(-5)²
=2×(-3)×38=-6×38=228
4.b.diketahui x=4;y=3
Luas=p×l=(3y-2)×(2x+5)
=(3×3-2)×(2×4+5)=7×13=91