3 years ago

Help me Plzz I need help with this !!

Mathematics

2 answers:

Zanzabum3 years ago

6 0

Answer: B. -11 + 7

Step-by-step explanation: When you subtract a negative you actually add, so it would be -11 + 7.

Ilya [14]3 years ago

4 0

Answer:

B. -11 + 7

Step-by-step explanation:

Minus a negative translates to add.

-11 - (-7) = -11 + 7

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Step-by-step explanation:

Given polynomials are:

$P_1 : 2x^4+5x^3-8x^2-x+10\\P_2: 8x^4-4x^3+x^2-x+2$

We have to find the sum of polynomials

So,

$S = P_1+P_2\\= (2x^4+5x^3-8x^2-x+10) + (8x^4-4x^3+x^2-x+2)\\=2x^4+5x^3-8x^2-x+10+8x^4-4x^3+x^2-x+2\\$

Combining like terms

$=2x^2+8x^4+5x^2-4x^3-8x^2+x^2-x-x+10+2\\= 10x^4+x^3-7x^2-2x+12$

Hence,

Option D: $10x^4+x^3-7x^2-2x+12$ is the right answer

Keywords: Polynomials, sum

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#LearnwithBrainly

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