Answer:
x = 6 or x = -7
Step-by-step explanation:
Solve for x over the real numbers:
x^2 + x - 42 = 0
The left hand side factors into a product with two terms:
(x - 6) (x + 7) = 0
Split into two equations:
x - 6 = 0 or x + 7 = 0
Add 6 to both sides:
x = 6 or x + 7 = 0
Subtract 7 from both sides:
Answer: x = 6 or x = -7
18% I believe. Because you do the math then you rounded out and then I get 18%
Hello,
So the discount was 40% that means the original price is
100 - 40 = 60%
That means
0.6x = 3
and when finding x (the price)
x = 5
That would be the original price.
Hope it helps.
