Factoring?

1 ⤊

How do I get x(x+4)=3(x+10) into quad form - factor form

2007-05-10 16:04:15 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

x^2 +4x = 3x +30
-3x -3x
x^2 +x = 30

x^2 + x - 30 = 0
To find the factors, you have to ask what factors of -30 can be added together to get 1. 6 and 5 are factors of 30 and 6 -5 = 1 and 6 * -5 = -30. SOOOO....
(x+6)(x-5) = 0
x=5, -6

2007-05-10 16:27:40 · answer #1 · answered by Mary Beth 1 · 1⤊ 0⤋

xÂ² + 4x = 3x + 30
xÂ² + x - 30 = 0
(x + 6).(x - 5) = 0
x = - 6, x = 5

2007-05-11 14:22:19 · answer #2 · answered by Como 7 · 0⤊ 0⤋

x^2 + 4x = 3x + 13
x^2 + x - 13 = 0

2007-05-10 23:10:07 · answer #3 · answered by xbonjoviaddictx 2 · 0⤊ 1⤋