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zhuklara [117]
3 years ago
8

P=−4b 2 +6b−9 Q=7b 2 −2b−5 ​P−Q= Your answer should be a polynomial in standard form.

Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

−11b^2+8b−4

Step-by-step explanation:

−4b2+6b−9−7b2+2b+5

Simplify by adding terms.

11b2+8b−4

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How is the sum expressed in sigma notation?<br><br> 11 + 17 + 23 + 29 + 35 + 41
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<h3>The sum expressed in sigma notation is:</h3>

11+17+23+29+35+41=\sum\limits_{i=1}^{6}5+6i

<u><em>Solution:</em></u>

Given that,

11 + 17 + 23 + 29 + 35 + 41

We have to express the sum in sigma notation

Analyse the series

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5 + 6(2) = 17

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5 + 6(5) = 5 + 30 = 35

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<em><u>This can be expressed in sigma notation as:</u></em>

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<em><u>We can expand the sigma notation and verify the results</u></em>

\sum\limits_{i=1}^{6}5+6i=(5+6(1))+(5+6(2))+(5+6(3))+(5+6(4))+(5+6(5))+(5+6(6))\\\\\\\sum\limits_{i=1}^{6}5+6i=(5+6)+(5+12)+(5+18)+(5+24)+(5+30)+(5+36)\\\\\\\sum\limits_{i=1}^{6}5+6i=11+17+23+29+35+41

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