Question

Please help me for both please, asap :)) thank you!

Answer 1

The correct answer is the third one

Explanation:

`8x + (15)/(x) = 26`

`8 {x}^(2) + 15 - 26x = 0`

a = 8, b = -26, c = 15

`d = {b}^(2) - 4ac = ( { - 26})^(2) - 4 * 8 * 15 = 676 - 480 = 196 > 0`

`x1 = ( - b - √(d) )/(2a) = (26 - 14)/(2 * 8) = (12)/(16) = (3)/(4)`

`x2 = ( - b + √(d) )/(2a) = (26 + 14)/(16) = (40)/(16) = (5)/(2)`