Factorise: x² + 16x - 1728
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X^2+16X-1728=0
a = 1; b = 16; c = -1728;
Δ = b2-4ac
Δ = 162-4·1·(-1728)
Δ = 7168 = 32√7
The delta value is higher than zero, so the equation has two solutions
The solution--
x= (-b + Δ)/2a and (-b - Δ)/2a
x= (-16 + 32√7)/2 and (-16 - 32√7)/2
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