The solution set for x^2 -x -56=0 is A.{7,8} b. {-7} c. {8} d. {-7,8} e. {7.-8}
1 answer:
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Given:
To find:
The missing value.
Solution:
Let x be the missing value.
We have,
Subtract from both sides.
Multiplying both sides by 5, we get
So, the missing value is 3.
Therefore, the correct option is C.