determinant: 
(a) 
D<0 means there are no real roots. there are two complex roots with imaginary components.
(b) D=16+20=36>0
D>0 means there are two real roots
(c) D = 20^2-4*4*25 = 0
D=0 means there is one real root with multiplicity 2
Answer:
None, the answer will be the same
Step-by-step explanation:
Answer:
i think its number 2 hope its correct
No solutions
Explanation: Any number you use, the equation of x + 7 will always be 2 more than x + 5