Question

What are the solutions to the equation x2+9x+12=6?

Answer 1

B displays correct solutions for x² +9x +12 = 6

Explanation:

`\rightarrow \sf x^2 + 9x + 12 = 6`

`\rightarrow \sf x^2 + 9x +12 -6 = 0`

`\rightarrow \sf x^2 + 9x + 6 =0`

use the formula:
`\sf \bold{x = ( -b \pm √(b^2 - 4ac))/(2a ) \ \ when \ \ \ ax^2 + bx + c = 0}`

`\rightarrow \sf x = ( -9 \pm √((-9)^2 - 4(1)(6)))/(2(1))`

`\rightarrow \sf x = ( -9 \pm √(57))/(2)`

`\rightarrow \sf x = ( -9)/(2) +(√(57))/(2)` ;
`\sf x = ( -9)/(2) -(√(57))/(2)`