Please help with these algebra problems!

Question

+3

622

3

+185

1. The roots of $x^2+8x+4$ are the same as the roots of $Ax^2+Bx+1$ . What is $A+B$ ?

2. Find the discriminant of the quadratic $5x^2 - 2x + 8$ .

3. Find the largest integer $k$ such that the equation $5x^2 - kx + 8 = 0$ has no real solutions.

Please help and explain if you can!

Otterstar Jul 16, 2020

amazingxin777 · Answer 1 · 2020-07-16T06:15:55

2) The discrimant is $b^2-4ac$ so it would be $4-160\Rightarrow -156$

Guest · Answer 2 · 2020-07-18T04:33:57

1) The roots are -4 +/- 2*sqrt(3), so A + B = 7/12.