exam Maths Puzzle Numerical Ability

y+12when y=29

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Light travels approximately 5.87 x 10^12 mi. in one year. This distance is called a light-year. Suppose a star is 2 x 10^4 light-years away. How many miles away is the star? 1.) Perform the indicated operations:

a.) b^3 - b^2 + 3b - (b - 3) + (3 - 2b^2 + 3b^3)=

b.) -3(3 - b)(3 + b) =

c.) (c - 3)^2=

d.) (a - b)(a^2 + ab + b^2)=

e.) 6c^2 - 12c +3 / -3c =