Question

can you help me with a^2 - 5a - 20

Answer 1

This is exactly like before. What multiplies to -20 and adds to -5?

Answer 2

i dont have a clue

Answer 3

Hmm, I see. This can't be factored, but you can find what a is using the quadratic formula.

Answer 4

\[a = \frac{ 1 }{ 2 }(5 \pm \sqrt{105})\]