Factoring Help Please!?

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Factoring Help Please!?

15 y^2 + 4 y -4

2007-07-26 10:31:21 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

5 answers

(3y+2)(5y-2)

2007-07-26 10:58:20 · answer #1 · answered by amir a 2 · 0⤊ 0⤋

a=15, b=4, c=-4
you can use "product/sum" method
product: 10*-6 =-60 (a*c)
sum: 10+-6 = 4 (b)

rewrite as 15y^2+10y-6y-4
group first 2 terms and second 2 terms; factor common term
5y(3y+2)-2(3y+2)
(3y+2)(5y-2)

2007-07-26 17:37:36 · answer #2 · answered by hrhbg 3 · 0⤊ 0⤋

(5 y - 2) (3 y + 2)
Check
5y (3 y + 2) - 2 (3y + 2)
15yÂ² + 10y - 6y - 4
15yÂ² + 4y - 4 (as required)

2007-07-26 17:45:08 · answer #3 · answered by Como 7 · 0⤊ 0⤋

(3y+2)(5y-2)

2007-07-26 17:38:26 · answer #4 · answered by 037 G 6 · 0⤊ 0⤋

(5Y-2)(3Y+2)

2007-07-26 17:37:31 · answer #5 · answered by Kenneth H 3 · 0⤊ 0⤋