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soldier1979 [14.2K]
3 years ago
14

What is the sum of the polynomials? (7x^3– 4x^2) + (2x^3 +3x)

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

Answer:

sum of the polynomials is 9 x^{3} - 4 x^{2} +3x

Step-by-step explanation:

Given polynomial is (7 x^3– 4 x^2) + (2 x^3 +3 x)

adding x^3 terms, now we get

(7+2)x^3-4 x^2+3 x

9 x^{3} - 4 x^2 +3 x

Therefore the sum of given polynomial is

9 x^3-4 x^2+3 x

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Answer:

x=−1 or x=−6

Step-by-step explanation:

Multiply all terms by x and cancel:

xx+6=−7x

x2+6=−7x(Simplify both sides of the equation)

x2+6−−7x=−7x−−7x(Subtract -7x from both sides)

x2+7x+6=0

(x+1)(x+6)=0(Factor left side of equation)

x+1=0 or x+6=0(Set factors equal to 0)

x=−1 or x=−6

Check answers. (Plug them in to make sure they work.)

x=−1(Works in original equation)

x=−6(Works in original equation)

Check out this website where i got my info. <em>https://www.mathpapa.com/algebra-calculator.html</em>

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Answer:

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Elenna [48]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{2}}}}}

Step-by-step explanation:

Let the missing integer be x

Solve for x

\sf{ - 3 - x =  - 5}

Move 3 to right hand side and change it's sign

\dashrightarrow{ \sf{ - x =  - 5 + 3}}

The negative and positive integers are always subtracted but posses the sign of the bigger integer

\dashrightarrow{ \sf{ - x =  - 2}}

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\dashrightarrow{ \boxed{ \sf{x = 2}}}

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Step-by-step explanation:

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