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Mathematics 19 Online
OpenStudy (anonymous):

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

OpenStudy (anonymous):

leave the first bracket as is and then multiply all the values in the second 3 bracket and collect like terms

OpenStudy (anonymous):

\[(-3x^2-7x+2) -3(2x^2-7x+4)\]

OpenStudy (anonymous):

\[(-3x^2 - 7xx+ 2) - (6x^2 - 21x + 12)\]

OpenStudy (anonymous):

\[-3x^2 - 7x + 2 - 6x^2 + 21x + 12\]

OpenStudy (anonymous):

Do you combine all like terms now?

OpenStudy (anonymous):

?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

the final answer is -9x^2+14x +18

OpenStudy (anonymous):

??

OpenStudy (anonymous):

-9x^2+14x+14

OpenStudy (anonymous):

question, when you subtract a negative polynomial dont you change the signs?

OpenStudy (anonymous):

yes it should be \[−3x2−7x+2−6x2+21x-12\]

OpenStudy (anonymous):

then ur final answer is \[-9x2+14x-10\]

OpenStudy (anonymous):

why isnt it 3x2?

OpenStudy (anonymous):

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