Step-by-step explanation:
1) -7 (divide -28 by 4 to isolate x)
2) -8 (two negatives = a positive, so it's x + 6 = -2, then subtract 6 from both sides)
3) 5 (subtract 4 from both sides, and multiply each side by -1)
4) 2 (subtract 7 from both sides, then divide by -3)
5) -3 (add 11 to both sides then divide by 25)
Answer:
one
Step-by-step explanation:
for general form : ax²+bx+c=0
delta = b²-4ac
so for this example delta is 8²-4×2×8 =0
we know if delta = 0 , we have just one real number solution
so the answer is 1
