Factor this trinomial completely. 12x2 + 8x - 15

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asked Mar 26, 2020 152k views

3 votes

Factor this trinomial completely.
12x2 + 8x - 15

Mathematics
middle-school

Siamko asked

by Siamko

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2 Answers

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My answer would be=8x+9

Muhammad Nour answered Mar 27, 2020

by Muhammad Nour

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1 vote

Answer:

(6x-5)(2x+3)

Explanation:

The numbers that multiply to give
$a\cdot{c}=12\cdot{-15}=-180$ yet add to give
b=8 are 18 and –10.

$12x^(2)+8x-15\\12x^(2)+18x-10x-15\\6x(2x+3)-5(2x+3)\\(6x-5)(2x+3)$

JuliusG answered Mar 30, 2020

by JuliusG

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