exam Maths Puzzle Numerical Ability

Please help me factor the polynomial 49+112y+64y^2

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exam Other Question

If the alternate hypothesis states that  does not equal 4,000, what is the rejection region for the hypothesis test?
A) Both tails
B) Lower or left tail
C) Upper or right tail
D) Center
E) None of the above
Show that the numbers is rational by writing it as a quotient of two intergers.

2. 3

Any help with this equation would be GREATLY</b> appreciated.