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.