Question

2x²+{7+[-3(9x-1)(x+2)]+7}=2+[-3(x-3)²-(x+9)²]​

Answer 1

Respuesta:

33x² = -75

Explicación paso a paso:

2x²+{7+[-3(9x-1)(x+2)]+7}=2+[-3(x-3)²-(x+9)²]​

2x² + { 7 + [ -27x² - 51x + 6] + 7} = -106 - 4x²

2x² + (9x - 5) . (3x - 4) = -106 - 4x²

29x² - 51x + 20 = -2 (53 + 2x²)

29x² - 31 = -106 - 4x²

29x² + 4x² = -106 + 31

33x² = -75