# Khan/khan-exercises

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# Factoring polynomials by grouping - why not have a minus outside #35331

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I answered -(x+1)(7x+3) which I think is prettier form than (-x-1)(7x+3). Even though one could have different opinions of the beauty of answer, both should be accepted since they are mathematically ecquivalent

factoring_polynomials_by_grouping_1.html?seed=161&problem=0

[["-(x+1)(7x+3)"],["(-x-1)(7x+3)"]]


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 beneater Make factoring_polynomials_by_grouping_1 accept all valid answers fix #38994; fix #38162; fix #35332; fix #35331 Test plan: Load http://localhost:8000/exercises/factoring_polynomials_by_grouping_1.html?debug&problem=0&seed=88 and try all of these answers: (-7x-1)(x-5) (-7x-1)(-5+x) (-1-7x)(x-5) (-1-7x)(-5+x) (x-5)(-7x-1) (-5+x)(-7x-1) (x-5)(-1-7x) (-5+x)(-1-7x) (7x+1)(-x+5) (7x+1)(5-x) (1+7x)(-x+5) (1+7x)(5-x) (-x+5)(7x+1) (5-x)(7x+1) (-x+5)(1+7x) (5-x)(1+7x) -(7x+1)(x-5) -(7x+1)(-5+x) -(1+7x)(x-5) -(1+7x)(-5+x) -(-x+5)(-7x-1) -(5-x)(-7x-1) -(-x+5)(-1-7x) -(5-x)(-1-7x) -(7x+1)(x-5) -(7x+1)(-5+x) -(1+7x)(x-5) -(1+7x)(-5+x) -(-x+5)(-7x-1) -(5-x)(-7x-1) -(-x+5)(-1-7x) -(5-x)(-1-7x) Auditors: cbhl, alpert 66a5ed8
closed this in 66a5ed8