Hi, i found a factorization example on a book but i didn't know how they got *
A=10x^2-15x
A=5x*2x-5x*3
A=5x(2x-3)
2007-09-23 06:11:19 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
I didn't get how they got
A=5x(2x-3)
be cause
A=5x*2x-5x*3
2x-5x = -2x
2007-09-23 06:20:27 · update #1
When factoring, pull out the largest factor of each term. Between 10 and 15, the largest factor would be 5. Between x^2 and x, x would be the largest factor. Therefore, 5x is the largest factor. The second step shows the full process: 10x^2 = 5x(2x) and -15x = 5x (-3). As mentioned, the factor was 5x so 5x(2x - 3).
2007-09-23 06:22:03 · answer #1 · answered by Jo 4 · 1⤊ 0⤋
10 can be represented as 1 x 10 or 2 x 5
15 can be represented as 3 x 5 or 1 x 15
So, if you are looking for factors, taking 2 x 5 for 10 and 3 x 5 for 15 makes sense. And between x^2 and x, x is a common factor. Now look at the solution.
2007-09-23 13:17:56 · answer #2 · answered by Swamy 7 · 1⤊ 0⤋
firstly break 10x^2 as 5x*2x & 15x as 5x*3,then take 5x common & that's all
A=10x^2-15x
or A=5x*2x-5x*3
or A=5x(2x-3) ans
2007-09-23 13:33:53 · answer #3 · answered by MAHAANIM07 4 · 1⤊ 0⤋
10x^2 = 5x(2x) [that's where you get 5x*2x]
15x = 5x(3) [which gives 5x*3]
Q = 10x^2-15x
= 5x(2x) - 5x(3) [5x is the common term, so you can combine it...]
A = 5x(2x-3)
ok?
2007-09-23 13:20:08 · answer #4 · answered by ieja 4 · 1⤊ 0⤋
trop dur pour moi
2007-09-23 13:57:55 · answer #5 · answered by rppanpan 3 · 0⤊ 1⤋
it is obvious, what question?
2007-09-23 13:19:32 · answer #6 · answered by zsm28 5 · 1⤊ 0⤋