Question

x(x+1)=1806
What is value of x?

Answer 1

x^+x=1806
x^+x-1806=0
x^-43x+42x-1806=0
x(x-43)+42 (x-43)=0
(x-43)(x+42)=0
x=43,-42
Two values of x are found
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Answer 2

x(x+1) = 1806

x² + x - 1806

x² + 43x - 42x - 1806

x(x+43) - 42(x+43)

(x-42)(x+43)

x= 42 and ⁻43