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navik [9.2K]
3 years ago
7

Please help me the picture below has the question and the answers

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
7 0

Answer:

c should be the correct one

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**HELP ASAP PLZ ;-;**
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Answer:

1. <em><u>(</u></em><em><u>x^</u></em><em><u>3</u></em><em><u>+</u></em><em><u>7</u></em><em><u>x</u></em><em><u>^</u></em><em><u>2</u></em><em><u>+</u></em><em><u>8</u></em><em><u>x</u></em><em><u>-</u></em><em><u>1</u></em><em><u>6</u></em><em><u>)</u></em><em><u> </u></em><em><u>;</u></em><em><u> </u></em><em><u>domain</u></em><em><u>:</u></em><em><u> </u></em><em><u>R</u></em><em><u> </u></em><em><u>(</u></em><em><u>all</u></em><em><u> </u></em><em><u>real</u></em><em><u> </u></em><em><u>number</u></em><em><u>)</u></em>

<em><u>2</u></em><em><u>.</u></em><em><u> </u></em><em><u>(</u></em><em><u>x-1</u></em><em><u>)</u></em><em><u> </u></em><em><u>;</u></em><em><u> </u></em><em><u>domain</u></em><em><u>:</u></em><em><u> </u></em><em><u>R-</u></em><em><u>(</u></em><em><u>-</u></em><em><u>4</u></em><em><u>)</u></em><em><u> </u></em><em><u> </u></em><em><u>{</u></em><em><u>all</u></em><em><u> </u></em><em><u>real</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>except</u></em><em><u> </u></em><em><u>(</u></em><em><u>-</u></em><em><u>4</u></em><em><u>)</u></em>

Step-by-step explanation:

f*g= f(x) and g(x)

i.e, f*g= (x^2+3x-4)(x+4)

i.e, f*g= x^3+3x^2-4x+4x^2+12x-16

i.e, f*g=x^3+7x^2+8x-16

it's domain is R, i.e, all real number!

f/g=(x^2+3x-4)/(x+4)

i.e, f/g={(x+4)(x-1)}/4

i.e,f/g=x-1

it's domain is all real number,except the number at which (x+4) becomes 0, i.e, x= (-4), -4 is not in domain!

✌️;)

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4 years ago
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