Noel and dina factored the following trinomial. Only one of the students factored correctly
m(2squared)+x-20
Neol got factors (x+4)(x-5) Dina got (x-4)(x+5)
Who is correct
2007-10-25 13:16:19 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Can u like write to out
show how u got the answer
im still confused
2007-10-25 13:24:07 · update #1
Dina. Noel's factorization would be for x^2-x-20.
2007-10-25 13:20:20 · answer #1 · answered by richarduie 6 · 0⤊ 0⤋
Dina because of the x being positive the 5 has to be positive and the 4 would be negative
2007-10-25 13:40:36 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
Dina is because there is a positive middle term. Noel's factor will give you a negative middle term.
2007-10-25 13:20:16 · answer #3 · answered by chad c 2 · 0⤊ 0⤋
the answer is (x+5) (x-4)
the sum must be equal to the coefficient of the middle term which is 1. ( 5-4 = 1)
2007-10-25 13:22:36 · answer #4 · answered by joyce 2 · 0⤊ 0⤋
Seems like I'm the only student correct.
m^2 + x - 20 = (m+5)(m-4)
2007-10-25 13:20:49 · answer #5 · answered by UnknownD 6 · 0⤊ 0⤋