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Elden [556K]
3 years ago
10

What is the answer to this : Expand y(y + 10)

Mathematics
1 answer:
Ivenika [448]3 years ago
7 0
When expanding brackets, you have to multiply whatever is outside by everything on the inside
The calculations you would do are
y x y
y x 10

Whenever a value is multiplied by itself once, we describe it as the value squared (²)
y x y can be written as y²

y x 10 is the same as 10 lots of y
In algebra, we don't write multiplication signs as it can get confusing so we write the number directly in front of the letter    10y

When put together, y(y + 10) expanded is

y² + 10y
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Answer:

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Step-by-step explanation:

To find the initial amount, put 0 where t is in the formula and do the arithmetic.

  A(0) = 523(1/2)^0 = 523(1) = 523

The initial amount is 523 grams.

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