True or false the fraction 9/21 is in lowest terms
2 answers:
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Answer:
{1}
Step-by-step explanation:
We find determinant for the given matrix and set it equal to -1
To find determinant we apply formula
|A| = x^2 - 2x
Now we set the determinant = -1
Add 1 on both sides
Now factor it
(x-1)(x-1) = 0
Set each factor =0 and solve for x
x- 1=0 so x=1