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Hitman42 [59]
3 years ago
14

The only solution of the equation x2 + bx + 16 = 0 is x = 4. What is the value of b?

Mathematics
1 answer:
Ksju [112]3 years ago
4 0
To factor out x2 + bx + 16, the easiest way is to find out 2 different values that will add up to b but when multiplied is positive 16. Given that the only solution to this equation above is x = 4. the factored out form should be (x - 4)^2 or (x-4)(x-4). As b should be the addition of these two x values, b should be -8. The correct option is the second option, b = -8.
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Answer:

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Step-by-step explanation:

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4 years ago
How would I start to solve number 15? Would I use distributive property?
natita [175]
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Answer:

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