pls i want someone who understands this concept very well to answer.
2007-06-25 10:17:00 · 10 answers · asked by missy prapjel 1 in Science & Mathematics ➔ Mathematics
(x-4)(x-1)
x^2 - 5x + 4
to get to there, use FOIL as your aid.
FOIL stands for:
First
Outside
Inside
Last
1st, you multiply x in the first parenthesis by x in the second parenthesis. Now, you should have x^2
2nd, you multiply x in the first parenthesis by -1 in the second parenthesis. Now you should have x^2 - x
3rd, multiply -4 in the first () by x in the second (). Now you should have x^2 - x - 4x
4th, multiply -4 in the first () by -1 in the second (). Now you should have x^2 - x - 4x + 4
5th, add like terms.
final answer: x^2 -5x + 4
2007-06-25 10:22:16 · answer #1 · answered by Carmen 4 · 1⤊ 0⤋
You need to take x-4 and multiply it by each part of the send parenthesess.
So (x*(x-4))-(1*(x-4))
(x^2-4x) -( x-4)
X^2-5x+4 (Note that -4x - x = -5x and the -4 and the negative sign just in front of that parenthese makes it + 4)
2007-06-25 17:27:16 · answer #2 · answered by Katie 3 · 0⤊ 0⤋
Break it down step-by-step like this to see how to do this type of problem more clearly:
(x - 4)(x -1)
x(x-1) - 4(x-1)
x^2 - x - 4x + 4
x^2 - 5x + 4
2007-06-25 17:26:11 · answer #3 · answered by coryfucius 3 · 0⤊ 0⤋
(x-4)(x-1)
Just split the parenthasis:
x(x-4) - 1(x-4)
x^2-4x - x+4
Simplify:
x^2-5x+4
Hope that helped!
2007-06-25 17:26:37 · answer #4 · answered by Sugar 2 · 0⤊ 0⤋
= x.(x - 1) - 4.(x - 1)
= x² - x - 4x + 4
= x² - 5x + 4
2007-06-28 05:07:59 · answer #5 · answered by Como 7 · 0⤊ 0⤋
multiply x to ( x - 1) = x^2 - x
multiply -4 to ( x - 1) = - 4x + 4
add. . x^2 - x . . and . . - 4x + 4
answer is . . . x^2 - 5x + 4
2007-06-25 17:33:30 · answer #6 · answered by CPUcate 6 · 0⤊ 0⤋
(x-4)(x-1) = x(x) -1(x) -4(x) -4(-1)
2007-06-25 17:25:37 · answer #7 · answered by koutetsu12 3 · 0⤊ 0⤋
(x-4)(x-1)
= x*x +x*(-1) -4*x -4*(-1)
= x^2 -x -4x +4
= x^2-5x +4
2007-06-25 17:24:34 · answer #8 · answered by ironduke8159 7 · 0⤊ 0⤋
x^2 - 5x + 4 is the answer.
2007-06-29 13:26:58 · answer #9 · answered by Jun Agruda 7 · 2⤊ 0⤋
(x-4)(x-1)=x^2-5x+4. answer
2007-06-25 17:21:39 · answer #10 · answered by Anonymous · 0⤊ 0⤋