Bantuin jawab yah di kumpulkan hari ini​

Jawab:

1. x={-3, 3}

2. x={-1/2, 0}

3. x={-6, -1}

4. x={-5, 3}

5. x={-3, -1/2}

Penjelasan dengan langkah-langkah:

1. 9x² – 81 = 0

Faktorkan

(3x + 9) (3x – 9) = 0

3x + 9 = 0, 3x – 9 = 0

x = -9/3, x = 9/3

x = -3, x = 3

x={-3, 3}

2. 4x² + 2x = 0

Faktorkan

2x (2x + 1) = 0

2x = 0, 2x + 1 = 0

x = 0, x = -1/2

x={-1/2, 0}

3. x² + 7x + 6 = 0

Faktorkan

(x + 6) (x + 1) = 0

x + 6 = 0, x + 1 = 0

x = -6, x = -1

x={-6, -1}

4. x² + 2x – 15 = 0

Faktorkan

(x + 5) (x – 3) = 0

x + 5 = 0, x – 3 = 0

x = -5, x = 3

x={-5, 3}

5. 2x² + 7x + 3 = 0

Faktorkan

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

2x + 1 = 0, x + 3 = 0

x = -1/2, x = -3

x={-3, -1/2}