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Plz 20 points polynomials 1: subtract and simplify (–y^2 – 4y – 8) – (–4y^2 – 6y + 3) 2: multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2 3: multiply and simplify (x – 4) (x2 – 5x – 6)

Multiply these polynomials and simplify. enter your response in standard form (-6y + 8y4 – 5)(y2 – 11y)

Which of the following could be the lengths of the sides of an isosceles triangle? 1. (8, 4, 8) 2. (3, 2, 9) 3. (8, 2, 9) 4. (4, 5, 3) 5. (3, 1, 7)