1) 4x²=7x
2) -6x²+10=7x+6
3) 2x (3x+5)=4
4) 5(x²+2)=2x(3x+1)
Mohon di jawab dgn lengkap....
Jawab:
(1.) A = 4, B = -7, C = 0
(2.) A = 6, B = 7, C = -4
(3.) A = 6, B = 10, C = -4
(4.) A = 1, B = 2, C = -10
Penjelasan:
Bentuk persamaan kuadrat
Ax² + Bx + C = 0
(1.) 4x² = 7x
4x² - 7x + 0 = 0
Ax² + Bx + C = 0
A = 4, B = -7, C = 0
(2.) -6x² + 10 = 7x + 6
6x² + 7x + 6 - 10 = 0
6x² + 7x - 4 = 0
Ax² + Bx + C = 0
A = 6, B = 7, C = -4
(3.) 2x(3x+5) = 4
2x(3x) + 2x(5) - 4 = 0
6x² + 10x - 4 = 0
Ax² + Bx + C = 0
A = 6, B = 10, C = -4
(4.) 5(x²+2) = 2x(3x+1)
5x² + 5(2) = 2x(3x) + 2x(1)
5x² + 10 = 6x² + 2x
6x²-5x² + 2x - 10 = 0
x² + 2x - 10 = 0
1x² + 2x - 10 = 0
Ax² + Bx + C = 0
A = 1, B = 2, C = -10
(xcvi)
Jawaban:
Bentuk Umum Persamaan Kuadrat
[tex] \boxed{ {ax}^{2} + bx + c = 0 }[/tex]
1. 4x² = 7x
4x² - 7x = 0
a = 4 b = -7 c = 0
2. -6x² + 10 = 7x + 6
-6x² -7x + 10 - 6 = 0
-6x² - 7x + 4 = 0
a = -6 b = -7 c = 4
3. 2x (3x + 5) = 4
6x² + 10x - 4 = 0
a = 6 b = 10 c = -4
4. 5(x² + 2) = 2x(3x + 1)
5x² + 10 = 6x² + 2x
5x² - 6x² - 2x + 10 = 0
-x² - 2x + 10 = 0
a = -1 b = -2x c = 10
[answer.2.content]
