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MrMuchimi
3 years ago
7

Factorise by grouping: x² - 5x + 2x - 10

Mathematics
1 answer:
IrinaK [193]3 years ago
4 0

Answer:

(x + 2)(x - 5)

Step-by-step explanation:

Here are the steps:

x^2-5x+2x-10\\(x^2-5x)+(2x-10)\\x(x-5) + 2(x-5)\\(x + 2)(x-5)

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Ally and Beck went fishing and caught a total of 75 fish. At home,
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Answer:

<em>Beck actually caught 45 fish</em>

Step-by-step explanation:

<u>System of Equations</u>

We call the following variables:

x = number of fish Ally caught

y = number of fish Beck caught

They caught a total of 75 fish, thus:

x + y = 75      [1]

If Ally had caught twice as much fish as she actually did, and Beck had caught three times as many fish as he actually did, then Ally would have caught 75 fewer fish than Beck, thus:

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Substituting in [2]:

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Simplifying:

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Dividing by 5:

y = 45

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