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NeX [460]
3 years ago
14

Which of the following is a factor of 2xy + 8y − 8x − 32?

Mathematics
1 answer:
muminat3 years ago
4 0
You could start by eliminating wrong answer(s):

(a) 5 is definitely not a factor of the given <span>2xy + 8y − 8x − 32,

(d) x^2 - 4x + 16 (not x2 - 4x + 16) is not a factor (it has no y terms)

On the other hand:

(b) 2 definitely divides evenly into </span>2xy + 8y − 8x − 32:  2(<span>xy + 4y − 4x − 16)

(c) x + 4 divides evenly into both xy + 4y and -(4x + 16):
                                           We get 2(x +4) [y - 4]</span>
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Solve for the variable c in this equation a(c + b) = d
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Multiply everything in the parenthesis by a.

ac + ab = d

Subtract ab from both sides.

ac = d - ab

Divide a on both sides.

c = d - ab / a

Hope this helps!
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Juliette [100K]

Answer:

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Answer:

Option (D)

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By the converse of Pythagoras theorem,

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