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1. 2x(x²+8x-3);
2) (a+2)(a-5);
(3x-1)(2x+5). 3.
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1. 2x(x²+8x-3);
2) (a+2)(a-5);
(3x-1)(2x+5). 3.
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Answers & Comments
1) [tex]2x(x^2+8x-3)=2x^3+16x^2-6x[/tex]
2)[tex](a+2)(a-5)=a^2-5a+2a-10=a^2-3a-10[/tex]
3)[tex](3x-1)(2x+5)=6x^2+15x-2x-5=6x^2+13x-5[/tex]