2 years ago

Which of the following algebraic expressions represents the sum of 7 and one-fifth of x?

Mathematics

1 answer:

Simora [160]2 years ago

4 0

Answer:

Step-by-step explanation:

b because it say's 1/5 and 7 it do not say negative so yea

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Step-by-step explanation:

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Read 2 more answers

X2-3xy-5xy-7y2+4x2+8y2

Zepler [3.9K]

For this case we must simplify the following expression:

$x ^ 2-3xy-5xy-7y ^ 2 + 4x ^ 2 + 8y ^ 2$

We must add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

$(x ^ 2 + 4x ^ 2) + (- 3xy-5xy) + (- 7y ^ 2 + 8y ^ 2) =\\5x ^ 2-8xy + y ^ 2$

Thus, the simplified expression is:

$5x ^ 2-8xy + y ^ 2$

Answer:

$5x ^ 2-8xy + y ^ 2$

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Answer:

Step-by-step explanation:

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