Math, asked by hegadelaxmi636, 1 day ago

If A = 3 + 5x + 7x2, B = - 4 - 7x + x?, C = 4 + 5x - 8x2, find A + B + C.​

Answers

Answered by MrGoodBoi
17

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Correct option is

B

4x

2

−6x−4

To simplify an algebraic expression that consists of both like and unlike terms, we need to move the like terms together and then add or subtract their coefficients.

Here, the terms are 5x

2

−7x+3,−8x

2

+2x−5 and 7x

2

−x−2. We add these terms as shown below:

Attachments:
Answered by HүᏢησsᎥⲊ
5

Answer:

A= 3 + 5x + 14  =5x + 17 \: \:  \:  \\   B=  - 4 - 6x =  - 6x - 4 \\ C= 4 +5x - 16 = 5x - 12 \\  \\ A \:   + \: B \: +   \: C = 5x - 6x + 5x + 17 - 4 - 12 \\  = 4x + 1

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