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Deciding between two solutions

Solution 1:

x has the solution of -1/2 or 4 it means

x-0.5 or x-4 is equal to zero

=> (x-0.5)(x-4)=0

=>x^2 -4.5x+2=0

=>2x^2-9x+4=0

Solution 2:

x = -1/2 and x = 4

(x+1/2)(x-4)=0

(x+1/2)(x-8/2)=0

x2-7/2x-2=0

2x2-7x-4=0

Solution Preview

The second one is correct.

Remember that if x = a and x = b are solutions of a quadratic ...

Solution Summary

A simple case of forming the correct quadratic expression given its roots.

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