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Vlada [557]
2 years ago
13

Simplify :(a+b)²Thanks ​

Mathematics
2 answers:
Eddi Din [679]2 years ago
6 0

Answer:

(a+b)(a+b)

=a^2 + ab + ab + b^2

=a^2 + 2ab + b^2

Phoenix [80]2 years ago
3 0

Answer:

(a+b)² = ( a +b ) (a + b )

= a² + b² + 2ab

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Answer:

we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

Step-by-step explanation:

H0 : μ = 582

H1 : μ < 582

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T = (xbar - μ) ÷ σ/√n

Xbar = 515 ; n = 20 ; σ = 120

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Pvalue at t score = 2.50 ; df = 19 is 0.0187

At α = 0.0187

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Hence, we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

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3 years ago
Which expression is equivalent to?
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A and b are odd numbers.
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Step-by-step explanation:

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