Add or subtract the following polynomials. (5.9x to 3rd power + 3.4x to 2nd power - 7) - (2.9x to 3rd power - 9.6x to 2nd power + 3)
Question
Updated 6/22/2014 4:04:39 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [6/22/2014 4:03:44 AM]
Original conversation
User: Add or subtract the following polynomials. (5.9x to 3rd power + 3.4x to 2nd power - 7) - (2.9x to 3rd power - 9.6x to 2nd power + 3)

Weegy: (5.9x^3+3.4x^2-7)-(2.9x^3-9.6x^2+3) =(45x^3 +12x^2 -7) -(18x^3-54x^2+3) remove the paranthesis =45x^3+12x^2 -7 -18x^3 +54x^2 -3 take the like terms together and simplify 45x^3-18x^3 +12x^2+54x^2 -7-3 => (45-18)x^3 + (12+54)x^2 -(7+3) => 27x^3 + [ 66x^2 -10 ]
dandix14|Points 379|

User: multiply this polynomials - (6x + 7)(3x + 2), step-by-step

Weegy: x = 12/6 = 2
mjane25|Points 746|

Question
Updated 6/22/2014 4:04:39 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [6/22/2014 4:03:44 AM]
Rating
3
- (6x + 7)(3x + 2)
= -(18x^2 + 12x + 21x + 14)
= -(18x^2 + 33x + 14)
= -18x^2 - 33x - 14
Confirmed by andrewpallarca [6/22/2014 10:31:04 AM]

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