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28 votes
28 votes
4. Perform the following polynomial operations:

a. x2-7x+2-2x+3 b. x-3+x2+x-4


c.
4x^(2) +14x-8=0 d. (3x-7)(2x+3)


e. 2x+32

User Mukesh Gupta
by
3.1k points

1 Answer

9 votes
9 votes

#1


\\ \sf\longmapsto x^2-7x+2-2x+3


\\ \sf\longmapsto x^2-7x-2x+2+3


\\ \sf\longmapsto x^2-9x+5

#2


\\ \sf\longmapsto x-3+x^2+x-4


\\ \sf\longmapsto x^2+x+x-3-4


\\ \sf\longmapsto x^2+2x-7

#3


\\ \sf\longmapsto 4x^2+14x-8=0


\\ \sf\longmapsto 4x^2+16x-2x-8=0


\\ \sf\longmapsto 4x(x+4)-2(x+4)=0


\\ \sf\longmapsto (x+4)(4x-2)=0


\\ \sf\longmapsto x=-4\:or\:(1)/(2)

#4


\\ \sf\longmapsto (3x-7)(2x+3)


\\ \sf\longmapsto 3x(2x-3)-7(2x+3)


\\ \sf\longmapsto 6x^2-9x-14x-21


\\ \sf\longmapsto 6x^2-23x-21

#5


\\ \sf\longmapsto 2x+32


\\ \sf\longmapsto 2(x+16)

User BuschnicK
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