3 years ago

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Mathematics

1 answer:

8090 [49]3 years ago

8 0

Answer:

Step-by-step explanation:

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Algebraic expression and identity 1)simplify the following (3a+b)3 +(3a-b)3

mylen [45]

Answer:

$(3a+b)^3+(3a-b)^3=54a^3+18ab^2$

Step-by-step explanation:

Given: $(3a+b)^3+(3a-b)^3$

Formula: $x^3+y^3=(x+y)(x^2-xy+y^2)$

$(x+y)^2=x^2+2xy+y^2$

$(x-y)^2=x^2-2xy+y^2$

$x\rightarrow 3a+b$

$y\rightarrow 3a-b$

$\Rightarrow (3a+b+3a-b)((3a+b)^2-(3a+b)(3a-b)+(3a-b)^2)$

$\Rightarrow (6a)(9a^2+b^2+6ab-9a^2+b^2+9a^2+b^2-6ab)$

$\Rightarrow (6a)(9a^2+3b^2)$

$\Rightarrow 54a^3+18ab^2$

5 0

3 years ago

Please help me guysssssssssss I need help.......... Assignment due in 30 MIN!!!!! 1 PIC ATTACHED

MAVERICK [17]

The tool is easy to use. All you need to do is choose the number of words you want to create (the default is five, but you can input any number you'd like) and the type of words you want. You can choose from all words, verbs only, nouns only or adjective only depending on which best meets your needs.

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3 years ago

Read 2 more answers

The temperature in Minneapolis at 9 a.m. was −8°F. By noon, the temperature had risen by 8°F.

Alona [7]

Answer: 0

Add the number 8 to -8, because 8 is how much the temperature rose.

-8 + 8 = 0.

The temperature in Minneapolis is now 0 Fahrenheit.

Hope this helps you!

6 0

3 years ago