raven3973
28.09.2019 •
Mathematics
5. multiply 9x^2(2x^2 8x) a) 18x^4 72x^3 b) 18x^2 72x^3 c) 11x^4 - 17x^3 d) 90x^4
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Ответ:
Ответ:
(-2,0)
Set up quadratic
Divide each coefficient by 5
Factor using AC method.
Think of a number that multiply -2 and add to 1. The answer is -1 and 2.
So we write the equation as
Set each parenthesis to zero.
The other zero is -2