exam Maths Puzzle Numerical Ability

Solve the equation algebraically.

2x-x^2-18x+9=0

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exam Other Question

Which term prevents the following expression from being considered polynomial?

F(x)= 1/√2 x^4-1/√5 x^3-7x^-2+1.4x+21

A. -7x-2
B. 1/√2 x^4
C. -1/√5 x^3
D. 1.4x
E. 21 I would like to see step by step how this problem is solved 3|2x+5|-2<18