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Agata [3.3K]
3 years ago
13

Solve the following system of equations by linear combination:

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0
3d - e =7
d  + e = 5
-------------
4d  /  = 12
d=12:4
d=3

3+e=5
e=5-3
e=2
the solution is (3,2)
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Use the rational zero theorem to create a list of all possible rational zeroes of the function f(x) = 14x^7 - 4x^2 + 2
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In our f(x), constant is 2 and leading coefficient is 14

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Rational zeros of the form +-p/q  are

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Now we separate the factors

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+-1, +-\frac{1}{2}, +-\frac{1}{7}, +-\frac{1}{14},+-2, +-1 , +-\frac{2}{7}, +-\frac{1}{2}

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+-1, +-2, +-\frac{1}{2}, +-\frac{1}{7}, +-\frac{1}{14}, +-\frac{2}{7}

Option A is correct


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