Question

kaka bantu jawab 50 poin, jangan asal ya pakai cara plissss​

Answer 1

Penjelasan dengan langkah-langkah:

1.

x² + 3x + 2 = 0

x² + 2x + x + 2 = 0

x(x+2) + 1(x+2) = 0

(x+2)(x+1) = 0

x = -2 atau x = -1

2.

x² + 6x + 8 = 0

x² + 4x + 2x + 8 = 0

x(x+4) + 2(x+4) = 0

(x+4)(x+2) = 0

x = -4 atau x = -2

3.

x² + 3x - 4 = 0

x² + 4x - x - 4 = 0

x(x+4) - 1(x+4) = 0

(x+4)(x-1) = 0

x = -4 atau x = 1

4.

x² + x - 6 = 0

x² + 3x - 2x - 6 = 0

x(x+3) - 2(x+3) = 0

(x+3)(x-2) = 0

x = -3 atau x = 2

5.

x² - 10x + 9 = 0

x² - x - 9x + 9 = 0

x(x-1) - 9(x-1) = 0

(x-1)(x-9) = 0

x = 1 atau x = 9

6.

x² - 7x + 12 = 0

x² - 3x - 4x + 12 = 0

x(x-3) - 4(x-3) = 0

(x-3)(x-4) = 0

x = 3 atau x = 4

7.

x² - 2x - 3 = 0

x² + x - 3x - 3 = 0

x(x+1) - 3(x+1) = 0

(x+1)(x-3) = 0

x = -1 atau x = 3

8.

2x² + 5x + 3 = 0

2x² + 3x + 2x + 3 = 0

x(2x+3) + 1(2x+3) = 0

(2x+3)(x+1) = 0

x = -3/2 atau x = -1

9.

3x² - 27 = 0

3x² = 27

x² = 27/3

x² = 9

x = ±√9

x = ±3

x = -3 atau x = 3

10.

2x² - 8 = 0

2x² = 8

x² = 8/2

x² = 4

x = ±√4

x = ±2

x = -2 atau x = 2