Question

What are the zeros of the quadratic function f(x)=8x^2-16x-15

Answer 1

Explanation:

Step 1: Use the quadratic formula to find the zeros

`x=(-b\pm √(b^2-4ac) )/(2a)`

`x=(-(-16)\pm √((-16)^2-4(8)(-15)) )/(2(8))`

`x=(16\pm √(736) )/(16)`

`x=(16\pm 4√(46) )/(16)`

`x=(4\pm √(46) )/(4)`

Answer:
`x=(4\pm √(46) )/(4)`