Question

.......???????????????​

Answer 1

Explanation:

`x^2-5=-7x-1`

`x^2+7x-5=-1` (subtracted 7x from both sides of the equation)

`x^2+7x-4=0` (+1 both sides)

Use quadratic formula to solve for x:

`x=(-b \pm √(b^2 - 4ac) )/(2a)` where
`a=1,b=7,c=-4`

`=(-7 \pm √(7^2 - 4*1*(-4)) )/(2* 1)`

`=(-7 \pm √(49 +16) )/(2)`

`=(-7 \pm √(65) )/(2)`

`x=(-7 +√(65) )/(2),(-7 - √(65) )/(2)`

`x=0.53,-7.53`