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zloy xaker [14]
4 years ago
14

What is the solution set of 2x 2 + x = 15? {3, -5/2} {-3, 5/2} {2, -3/2}

Mathematics
1 answer:
maks197457 [2]4 years ago
7 0
<span>2x 2 + x = 15
</span><span>2x 2 + x -15 = 0
(2x - 5)(x+3) = 0

2x-5=0
x = 5/2

x+3=0
x=-3

answer </span><span>{-3, 5/2}
(second choice)</span>
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