exam Maths Puzzle Numerical Ability

write an equation for the circle that satifies each set of conditions.
center (-1,-5), radius of

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exam Other Question

1) Solve x2-2x-3>0.
a. (-3, 1)
b. (-1, 3)
c. (- ∞ , -3) U (1, ∞ )
d. (- ∞ , -1) U (3, ∞ ) Checking my work-3 to the 8th power is 6561? 7 to the 5th =2401?