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jok3333 [9.3K]
3 years ago
10

Evaluate the expression: 2 (m + 1) – n3 when m = -2 and n = 3

Mathematics
1 answer:
QveST [7]3 years ago
8 0

Answer:

-15

Step-by-step explanation:

2 * (-4+2) = -6

-6 - 9 = -15

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What is the solution to he equation (y/y-4)-(4/y+4)=3^2/y^2-16
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Answer:

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Step-by-step explanation:

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Factor denominators then solve by making denominators equal

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\frac{y\left(y+4\right)-4\left(y-4\right)}{\left(y-4\right)\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}

y\left(y+4\right)-4\left(y-4\right)=9

y^2+4y-4y+16=9

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take squar root of both sides

y=\pm \sqrt{-7}

y=\pm i \sqrt{7}

Hence final answer is y=\pm i \sqrt{7}.

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