Resolver las siguientes ecuaciones 1)2× + 10 = 12 2)9× - 1 = 107 - 3× 3)3× - 7 = 17 4)10× - 8 = 8× 5)2× + 3 = × - 9 6) 5× + 8 = 7× - 32 7)45× = 180 + 40× 8) 4× - 2 = × + 10 9)2× + 7 - 5× = 8 + × - 12 10)7(3× + 2) - 5(4× - 2) + 1 = 4(× - 2) + 1.
ax² + bx + c = 0
Pregunta de Matemáticas · 1 respuesta · mejor respuesta de Mademiche
1)2× + 10 = 12
2x = 12 - 10
2x = 2
x = 2 / 2 = 1
2)9× - 1 = 107 - 3×
9x + 3x = 107 + 1
12x = 108
x = 108 / 12 = 9
3)3× - 7 = 17
3x = 17 + 7
3x = 24
x = 24 / 3 = 8
4)10× - 8 = 8×
10x - 8x = 8
2x = 8
x = 8 / 2 = 4
5)2× + 3 = × - 9
2x - x = - 9 - 3
x = - 12
6) 5× + 8 = 7× - 32
5x - 7x = - 32 - 8 - 2x = - 40
2x = 40
x = 40 / 2 = 20
7)45× = 180 + 40×
45x - 40x = 180
5x = 180
x = 180 / 5 = 36
8) 4× - 2 = × + 10
4x - x = 10 + 2
3x = 12
x = 12 / 3 = 4
9)2× + 7 - 5× = 8 + × - 12
2x - 5x - x = 8 - 12 - 7 - 4x = - 11
4x = 11
x = 11 / 4 = 2, 75
10)7(3× + 2) - 5(4× - 2) + 1 = 4(× - 2) + 1
21x + 14 - 20x + 10 + 1 = 4x - 8 + 1
21x - 20x - 4x = - 8 + 1 - 14 - 10 - 1 - 3x = - 32
3x = 32
x = 32 / 3 = 10, 666.
. Espero que te sirva, salu2!
7x / 10 = 28 7x = 280 x = 40 (16x + 40 - 120) / 8 = x + 2 16x - 80 = 8x + 16 8x = 96 x = 12 (2x + 2 + 14x) / 14 = x - 2 2x + 2 + 14x = 14x - 2 2x + 2 = - 2 2x = - 4 x = - 2 (16x + 24 - 25x + 10) / 40 = (31x + 27) / 6…