Question

Latihan
soal
2 Sederhanakanlah!
a. ne×a×4
b. 6×(-ne)×(-2)
c. ne×(-2)+y×4

3.Tentukan bentuk paling sederhana!
a. 3(a+b)+2(3a-1)
b. 3(4×-3y)+2(ne+2y)
c. -5(×-2)-2(3ne-2)
d. 2(-3ne+2)-5(ne-1)

4.Sederhanakan!
a. (ne+5) (ne-5)
b. (ne-7) (ne-7)
c. (2a+6) (6-3)
d. (ne-11) (3ne+9)​

Answer 1

Jawaban:

2.

a. ne × 4 = 4ne

b. 6 × (-ne) × (-2) = 12ne

c. ne × (-2) + y × 4 = -2ne + 4y

3.

a. 3(a + b) + 2(3a - 1) = 3a + 3b + 6a - 2 = 9a + 3b - 2

b. 3(4 × -3y) + 2(ne + 2y) = -36y + 2ne + 4y = -32y + 2ne

c. -5(× - 2) - 2(3ne - 2) = -5ne + 10 - 6ne + 4 = -11ne + 14

d. 2(-3ne + 2) - 5(ne - 1) = -6ne + 4 - 5ne + 5 = -11ne + 9

4.

a. (ne + 5)(ne - 5) = ne^2 - 5^2 = ne^2 - 25

b. (ne - 7)(ne - 7) = (ne - 7)^2

c. (2a + 6)(6 - 3) = 2(a + 3)(3)

d. (ne - 11)(3ne) = 3ne^2 - 33ne