tolong isi nomer 2 sampai 5 pakai cara nya ya

Mapel : Matematika
Kelas : VIII SMP
Materi : Aljabar dasar

Pembahasan :
2A.

2(3x - y) = 2(3x) + 2(-y)
2(3x - y) = 6x - 2y

2B.

8(-x² + 3y) = 8(-x²) + 8(3y)
8(-x² + 3y) = -8x² + 24y

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3A.

(5a)³ = 5³a³
(5a)³ = 125a³

3B.

(2xy)² = 2²x²y²
(2xy)² = 4x²y²

3C.

(4p²q)² = 4²p²ˣ²q²
(4p²q)² = 16p⁴q²

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4A.

6xy : 2y = (6 : 2)x(y : y)
6xy : 2y = 3x

4B.

10a³b⁴c³ : 2abc = (10/2)a³¯¹b⁴¯¹c³¯¹
10a³b⁴c³ : 2abc = 5a²b³c²

4C.

p⁴q⁶r⁵ : pq²r³ = p⁴¯¹q⁶¯²r⁵¯³
p⁴q⁶r⁵ : pq²r³ = p³r⁴r²

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5.

Keliling = 2(p + l)
Keliling = 2(4x - 1 + 2x + 1)
Keliling = 2(6x)
Keliling = (12x) cm

Luas = p . l
Luas = (4x - 1)(2x + 1)
Luas = 8x² + 4x - 2x - 1
Luas = (8x² + 2x - 1) cm²