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help me with these couple of promblems?
8.(5 + x)(3 - 2x)=
9.(2x - 3)(x2 + 5x - 3)=
10.(2x2 - 5x - 1)(x2 + x - 3)=
3 Answers
- 1 decade agoFavorite Answer
8-> = - 2x2 - 7x + 15
9-> = 2x3 + 7x2 - 21x + 9
10-> = 2x4 - 3x3 - 12x2 - x + 18
- 1 decade ago
To answer number eight you multiply 5 by 3 and -2x. Then multiply x by 3 and -2x. Then you have 15-10x+3x-2x squared. Then combine like terms and you get -2x squared-7x+15.
Sorry I don't know how to type the an exponent but you got what I meant by squared right?
On the next problems do the same thing but distibute (multiply) each number in the first ( ) by all three numbers in the second ( )
