Question

Ayúdenme plis

X²-5X=0

X²-16=0

X²-49=0

-2X-X=0

2X²-18=0

3X²-11=0

-X²+12X=0

3X²-9X=0

X²-2X-3=0​

Answer 1

Explicación paso a paso:

${x}^{2} = 5x \\ \frac{ {x}^{2} }{x} = 5 \\ x = 5$

${x}^{2} = 16 \\ x = \sqrt{16} \\ x = 4$

${x}^{2} = 49 \\ x = \sqrt{49} \\ x = 7$

$- 3x = 0 \\ x = 3$

$2 {x}^{2} = 18 \\ {x}^{2} = \frac{18}{2} \\ x = \sqrt{9} \\ x = 3$

$3 {x}^{2} - 11 = 0 \\ 3 {x}^{2} = 11 \\ {x}^{2} = \frac{11}{3} \\ x = \sqrt{ \frac{11}{3} }$

$12x = {x}^{2} \\ 12 = \frac{ {x}^{2} }{x} \\ 12 = x$

$3 {x}^{2} = 9x \\ \frac{3 {x}^{2} }{x} = 9 \\ 3x = 9 \\ x = \frac{9}{3} \\ x = 3$