Mathematics, 19.10.2019 07:50 lostcharmedone01
Factor 2x^2-4x-30 completely. a. 2(x-5)(x+3) b. (2x-5)(x+3) c. (2x+3)(x-5) d. 2(x-3)(x+5)
Answers: 2
![2x^2-4x-30\\\\=2\cdot x^2-2\cdot2x-2\cdot15\\\\=2(x^2-2x-15)\\\\=2(x^2+3x-5x-15)\\\\=2[x(x+3)-5(x+3)]\\\\=2(x+3)(x-5)](/tpl/images/0333/8706/977d7.png)
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Factor 2x^2-4x-30 completely. a. 2(x-5)(x+3) b. (2x-5)(x+3) c. (2x+3)(x-5) d. 2(x-3)(x+5)...
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