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Katena32 [7]
3 years ago
5

The square of a number is 15 more than 2 times the number

Mathematics
1 answer:
UkoKoshka [18]3 years ago
3 0

x^2 = 2x + 15

x^2 -2x - 15 = 0

Factor:

(x-5)(x+3) = 0

x = 5 or x = -3

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The measures of two angles of a triangle are 49° and 75°. Find the measure of the third angle in degrees.
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Step by step:
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3 0
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