Respuesta :
Answer:
X equals x = -113/14 or also -8.071
Step-by-step explanation:
Subtract 113 from both sides of the equation :
14x = -113
Divide both sides of the equation by 14:
x = -113/14 = -8.071
Hope this helps :)
Answer:
x = 8i - 7 or x= -8i - 7
Step-by-step explanation:
To solve;
x² + 14x + 17 = -96
We can rearrange this;
Subtract 17 from both-side of the equation
x² + 14x + 17-17 = -96-17
x² + 14x = -113
We can not use factorization method to so this quadratic equation but we can use completing the square method or formula method to solve.
In this case we are going to be using completing the square method to solve;
x² + 14x = -113
Add the square of half of the coefficient of x to both-side of the equation
(That is; the coefficient of x is 14, half of 14 is 7, so we will add 7² to both-side of the equation)
x² + 14x + (7)² = -113 + 7²
We will factor the left hand-side of the equation and the si mplify the right-hand side of the equation.
(x + 7)² = -113 + 49
(x + 7)² = -64
Take the square root of both-side of the equation
[tex]\sqrt{(x+7)^{2} }[/tex] = ±[tex]\sqrt{-64}[/tex]
x + 7 = ± [tex]\sqrt{-64}[/tex]
We cant take the square root of negative number, so we will separate the negative integer from the positive integer.
x + 7 = [tex]\sqrt{-1}[/tex] × [tex]\sqrt{64}[/tex]
x + 7 = [tex]\sqrt{-1}[/tex] × ±8
Note [tex]\sqrt{-1} =[/tex] i
x + 7 = i × ±8
x + 7 = ±8i
Subtract 7 from both-side of the equation
x + 7 -7 = ±8i - 7
x = ±8i - 7
Either x = 8i - 7 OR x = -8i - 7
