exam Maths Puzzle Numerical Ability

Use a special product formula to factor the perfect square trinomial.

b2 + 18b + 81

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exam Other Question

Use the Rational Zeros Theorem to list possible rational zeros for P(X) = 4X^4 - 3X^3 + 2X^2 - 6. Can you help me solve this: Find each sum or difference.
(17x - 9y) - 11y