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3 years ago

8

Please help asap! (:

2 answers:

tiny-mole [99]3 years ago

8 0

Hello there! Let's calculate this. :)

<span><span><span><span><span><span>8<span>u^3</span></span>+<span>8<span>u^2</span></span></span>+6</span>+<span>4<span>u^3</span></span></span>−<span>6u</span></span>+3</span><span>

=<span><span><span><span><span><span><span>8<span>u^3</span></span>+<span>8<span>u^2</span></span></span>+6</span>+<span>4<span>u^3</span></span></span>+</span>−<span>6u</span></span>+3</span></span>

Combine Like Terms:<span>

=<span><span><span><span><span><span>8<span>u^3</span></span>+<span>8<span>u^2</span></span></span>+6</span>+<span>4<span>u^3</span></span></span>+<span>−<span>6u</span></span></span>+3</span></span><span>

=<span><span><span><span>(<span><span>8<span>u^3</span></span>+<span>4<span>u^3</span></span></span>)</span>+<span>(<span>8<span>u^2</span></span>)</span></span>+<span>(<span>−<span>6u</span></span>)</span></span>+<span>(<span>6+3</span>)</span></span></span><span>

=<span><span><span><span>12<span>u^3</span></span>+<span>8<span>u^2</span></span></span>+<span>−<span>6u</span></span></span>+9</span></span>

Answer:<span>

= D. <span><span><span><span>12<span>u^3</span></span>+<span>8<span>u^2</span></span></span>−<span>6u</span></span>+<span>9

Cheerio and have a lovely day! ^.^</span></span></span>

MAXImum [283]3 years ago

6 0

Hello!

You can only add variables with the same base and exponent

8u^3 + 4u^3 = 12u^3
8u^2 + 0 = 8u^2
0 + -6u = -6u
6 + 3 = 9

Put the sums together

12u^3 + 8u^2 - 6u + 9

The answer is $D) 12u^3 + 8u^2 - 6u + 9$

Hope this helps!

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