Jawab:
Penjelasan dengan langkah-langkah:
1 a. 2x + 5y - 6x + 9y
= 2x - 6x + 5y + 9y
= -4x + 14y
b. 2a(4 - 3a) - 8a + 6
= 8a - 6a² - 8a + 6
= - 6a² + 6
2. a. 3x + 6 + x - 2
= 3x + x + 6 - 2
= 4x + 4
b. 9 + 2a - 3b + 5b + 3a - 10
= 2a + 3a - 3b + 5b - 10 + 9
= 5a + 2b - 1
3. a. 6x² - 9 - 3x² + 11
= 6x² - 3x² + 11 - 9
= 3x² + 2
b. 2a² + 4a + 2 - 7a² + a
= 2a² - 7a² + 4a + a + 2
= - 5a² + 5a + 2
4. a. x+2/2 + x+3/3
= 6(x+2/2 + x+3/3)
= 3x + 6 + 2x + 6
= 3x + 2x + 6 + 6
= 5x + 12
b. 12ab/6c × 3cb²/a
= 12b/2b²
c. 4pq²/5r : 64p/15r
= 16q²/3
5. a. x² - 5x + 6
= (x - 3) (x - 2)
Benar
b. x² + 3x + 6
= Tidak ada
c. 2x² - x - 6
= (2x - 3) (x + 2)
Salah ×
d. 2x² - 3x - 2
= (2x + 1) (x - 2)
Okk maaf jika ada yang salah
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Jawab:
Penjelasan dengan langkah-langkah:
1 a. 2x + 5y - 6x + 9y
= 2x - 6x + 5y + 9y
= -4x + 14y
b. 2a(4 - 3a) - 8a + 6
= 8a - 6a² - 8a + 6
= - 6a² + 6
2. a. 3x + 6 + x - 2
= 3x + x + 6 - 2
= 4x + 4
b. 9 + 2a - 3b + 5b + 3a - 10
= 2a + 3a - 3b + 5b - 10 + 9
= 5a + 2b - 1
3. a. 6x² - 9 - 3x² + 11
= 6x² - 3x² + 11 - 9
= 3x² + 2
b. 2a² + 4a + 2 - 7a² + a
= 2a² - 7a² + 4a + a + 2
= - 5a² + 5a + 2
4. a. x+2/2 + x+3/3
= 6(x+2/2 + x+3/3)
= 3x + 6 + 2x + 6
= 3x + 2x + 6 + 6
= 5x + 12
b. 12ab/6c × 3cb²/a
= 12b/2b²
c. 4pq²/5r : 64p/15r
= 16q²/3
5. a. x² - 5x + 6
= (x - 3) (x - 2)
Benar
b. x² + 3x + 6
= Tidak ada
c. 2x² - x - 6
= (2x - 3) (x + 2)
Salah ×
d. 2x² - 3x - 2
= (2x + 1) (x - 2)
Benar
Okk maaf jika ada yang salah