How to factorize an expression like: By making factors?

Question

|x^2 + 7x- 149

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Answer 1 · 2017-12-02T14:02:16

see explanation
(I hope this answers your question)

That equation cannot be factorised since 149 is a prime number. to find the answers for #x#, you would use the quadratic formula.

#x = (-7+-sqrt(7^2 - 4*1*-149))/2#

#x= 9.2#

The negative surd is ignored because it gives a negative value of #x#