book Maths Puzzle Numerical Ability

Please help me solve this equation: { { { -2x^2 - 4x - 2 } } }.

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book Other Question

How many positive real zeros does the funtion f(x) = x4 + x3 - 7x - 1 have? 7. Evaluate 3/4 times 6 /7and reduce to simplest form.

A) 18/28 B) 1 C) 3/7 D) 9/14