The first question A= 1 B= 1 C= minus one.

B * B-4AC = 1 * 1-4 *- 1 = 1+5 = 6 > 0

So this equation has a solution.

The second question A=2 B=8 C=-7

B*B-4AC=8/8-4*2*-7=64-56>0

So this equation is related.

Thank you. Please adopt it.