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rewona [7]
3 years ago
14

Solve the equation x2 + 7x = 30.​

Mathematics
1 answer:
Law Incorporation [45]3 years ago
5 0

Answer:

2*7=14+6=30 points plz

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Answer: a) x = 5 or -1 b) x = √3+2

c) x = -1/2 or -3/2

Step-by-step explanation:

a) (x − 2)² = 9

First step is to take the square root of both sides to eliminate the square

√ (x − 2)² = √9

x-2 = +-3

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x = 5 and;

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b) 3(x-2)² = 9

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(x-2)² = 9/3

(x-2)² = 3

Second step is to take the square root of both sides to eliminate the square

√(x-2)² = √3

x-2 = √3

x = √3+2

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Dividing both sides by 24, we have

6/24 = (x+1)²

1/4 = (x+1)²

Taking the square root of both sides we have

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4 0
3 years ago
Which expressions are equivalent to -6n+(-12)+4n
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Step-by-step explanation:

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-6n + (-12) + 4n = -6n  + 4n - 12 = -2n - 12

-2n - 12 is your answer

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