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schepotkina [342]
3 years ago
8

Multiply————-(b+12)^2

Mathematics
1 answer:
Talja [164]3 years ago
5 0

Use Square of Sum: (a + b)^2 = a^2 + 2ab + b^2

b^2 + 2b * 12 + 12^2

Simplify 12^2 to 144

b^2 + 2b * 12 + 144

Simplify 2b * 12 to 24b

b^2 + 24b + 144

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Step-by-step explanation:

We are given the following in the question:

Money earned by Frankie each times he babysits = $5

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Amount of money to be saved =

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Let x be the number of times Frankie will need to babysit.

Thus, we can write the equation:

5x = 22\\\\\Rightarrow x = \dfrac{22}{5}\\\\\Rightarrow x = 4.4

Thus, Frankie will need to babysit for 4.4 time.

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