3 years ago

If (3+√5)(4-√5)=a+b√5, where a and b are integers, then what is the value of a + b?

1 answer:

defon3 years ago

4 0

54 = 2 x 3³
So, if a and b are integers, a=2 and b=3

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liraira [26]

Answer:

y = 2

Step-by-step explanation:

Given

$\sqrt[3]{3y+2}$ + 4 = 6 ( subtract 4 from both sides )

$\sqrt[3]{3y+2}$ = 2 ( cube both sides )

3y + 2 = 2³ = 8 ( subtract 2 from both sides )

3y = 6 ( divide both sides by 3 )

y = 2

6 0

3 years ago

PilotLPTM [1.2K]

a. 14, 18, 22, 26.... It is +4

b. 2,430, 7,290, 21,870..... It is x3

c. So it is going -2, -4, -6, -8 so the next one would be -10 which is -13 then -12 which is -25 and so on.

Hope this helps!

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4 years ago

Ainat [17]

Step-by-step explanation:

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3 years ago

kolezko [41]

I think that the answers are 4, 4 and 25 respectively

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3 years ago

Kamila [148]

Answer:

$4.19

Step-by-step explanation:

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3 years ago