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cluponka [151]
3 years ago
10

If f(x) = 2x2 + 5x - 8 and f(x) = -10, which of the following could be a value for x? -2

Mathematics
1 answer:
alexdok [17]3 years ago
7 0

Answer:

x = -2 or x = -1/2

Step-by-step explanation:

We can just set up an equation where the quadratic is equal to -10, and then solve the equation:

2x^2+5x-8=-10\\2x^2+5x+2=0\\\\

Now, factor:

(2x+1)(x+2) = 0\\x=-2 \text{ or } x=-1/2

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