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Darya [45]
3 years ago
15

What is the value of x?

Mathematics
1 answer:
Sati [7]3 years ago
5 0

Answer:

B. 28

Step-by-step explanation:

35^2-21^2=784

Square root of 784= 28 : )

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  signs of the constants in the binomial factors are negative

Step-by-step explanation:

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<em>Further comment</em>

c is the product of the constants in the binomial factors so will be positive when both those constants have the same sign.

b is the sum of the constants in the binomial factors. If both factors have the same sign (c > 0), then those constants have the same sign as b.

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