Question

Solve for x. 8x-4=x^2+5x-15

Answer 1

x=3/2+ −1/2√53 or x=3/2+ 1/2√53

Explanation:

Answer 2

`(3 + √(53) )/(2) and \: (3 - √(53) )/(2)`

Explanation:

`8x-4= {x}^(2) +5x-15`

=> we try to make one side "0". I choose left side. So;

=> add -8x both side. Because left side has +8x

`8x-4 - 8x= {x}^(2) +5x-15 - 8x`

`-4= {x}^(2) - 3x -15`

=> add +4 both side. Because left side has -4

`-4 + 4= {x}^(2) - 3x -15 + 4`

`0= {x}^(2) - 3x -11`

`{x}^(2) - 3x -11 = 0`

Use quadratic formula :

• What is quadratic formula
• solving for x

I solved in the picture, you can look it :)

Hope this helps ^-^