book Maths Puzzle Numerical Ability

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You are providing a great service to everybody who seeks help from this site. Please help me figure this one out? 2x^4+4x^2+2x-3 is-1
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I'm not sure if this is the correct section under which to ask my question, but I think that it might be. Okay, in the problem "Name the axis to which the major axis is parallel an a triangular garden has an area of 154 square feet. its height is 8 feet more than its base. find the measure of the base.