Thread replies: 5
Thread images: 1
Thread images: 1
File: 1498074950692.png (580KB, 556x576px) Image search:
[Google]
580KB, 556x576px
Look at these two factorizations for the product (x - 1)(x - 2):
(x - 1)(x - 2) = x(x - 2) - 1(x - 2) = x^2 - 2x - x - 2 = x^2 - 3x - 2.
(x - 1)(x - 2) = x(x - 2) - 1(x - 2) = x * x + x(-2) + (-1)x + (-1)(-2) = x^2 + (-3)x + 2.
Now I need somebody to explain this shit to me. Why is the second one correct when the only thing done differently is representing subtraction in terms of addition? And is it even possible to get the correct answer without doing this?
>>
>x(x - 2) - 1(x - 2) = x^2 - 2x - x - 2
wrong
>>
>>9156764
shit why
>>
>>9156772
Not him, but -1(x-2) = (-1)(x)+(-1)(-2)=-x+2
>>
>>9156759
Dumb animu poster.
Thread posts: 5
Thread images: 1
Thread images: 1