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SVEN [57.7K]
3 years ago
15

Simplify (a+b)^3 + (a-b)^3 + 6a(a^2-b^2)

Mathematics
1 answer:
11111nata11111 [884]3 years ago
7 0

Answer:

8a^3.

Step-by-step explanation:

(a+b)^3=a^3+b^3+3a^2b+3ab^2

(a-b)^3=a^3-b^3-3a^2b+3ab^2

(a+b)^3+(a-b)^3=2a^3+6ab^2

According to the question

(a+b)^3+(a-b)^3+6a(a^2-b^2)

Put in the value

=2a^3+6ab^2 +6a^3–6ab^2

=8a^3

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What kind of word problem can be solved with a two-variable equation?​
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3 years ago
Which linear equation represents a line with a slope of -7 and a y-intercept of 12
notka56 [123]

Answer:

<u>Answer</u><u> </u><u>→</u><u> </u><u>y</u><u> </u><u>=</u><u> </u><u>-</u><u>7</u><u>x</u><u> </u><u>+</u><u> </u><u>1</u><u>2</u>

Step-by-step explanation:

General equation of a line:

\hookrightarrow \: { \tt{y = mx + c}} \\

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From the question;

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Step-by-step explanation:

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3 years ago
Galina is finding the area of triangle RST. To do so, she follows the steps in the table.
vladimir1956 [14]

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3 step:

A_{\triangle ART}=\dfrac{1}{2}AR\cdot AT=\dfrac{1}{2}\cdot 2\cdot 3=3 sq. un.

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3 years ago
Read 2 more answers
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