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Juliette [100K]

2 years ago

10

Given: x+21=7(x+9) Find: x^2+5x

1 answer:

dlinn [17]2 years ago

5 0

Answer:

14

Step-by-step explanation:

x+21=7(x+9)

x+21=7x+63

-6x=42

x=-7

(-7)^2+5(-7)

=49+(-35)

=49-35

=14

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