Question

1. x2 – 3x - 4 = 0
2. - x2 - 4x - 2 = 0
3. 2x2 - x = -6
4. 0.5x2 + 2x + 1.5 = 0
5. 1.5x2 + 2x = 0​

Answer 1

Respuesta:

$1.x=-4\\2.x=\frac{1}{3}\\3.x=-2\\4.x=-0.5\\5.x=0$

Explicación paso a paso:

$1.-x-4=0\\-x-4+4=0+4\\-x=4\\\frac{-x}{-1}=\frac{4}{-1} \\x=-4\\\\2.-6x-2=0\\-6x-2+2=0+2\\-6x=2\\\frac{-6x}{-6}=\frac{2}{-6} \\x=\frac{1}{3} \\\\3.4x-x=-6\\3x=-6\\\frac{3x}{3}=\frac{-6}{3} \\x=-2\\\\4.x+2x+1.5=0\\3x+1.5=0\\3x+1.5-1.5=0-1.5\\3x=-1.5\\\frac{3x}{3}=\frac{-1.5}{3}\\ x=-0.5\\\\5.3x+2x=0\\5x=0\\\frac{5x}{5}=\frac{0}{5}\\x=0$