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Aleks [24]
3 years ago
6

Can anyone answer this ?

Mathematics
1 answer:
bagirrra123 [75]3 years ago
8 0

1.

(3 {x}^{2}  - 4x - 1) + (8 {x}^{2}  - x + 6) \\  \\ combining \: the \: like \: terms,\:we\:have\\ \\ = 3 {x}^{2}  + 8 {x}^{2}  - 4x - x - 1 + 6 \\ \\ = 11 {x}^{2}  - 5x + 5

2.

(6 {x}^{2}  - x - 4) + ( 2{x}^{2}  + 5x - 5) \\ \\combining \: the \: like \: terms, \: we \: have \\  \\= 6 {x}^{2}  + 2 {x}^{2}  - x + 5x - 4 - 5 \\  \\= 8 {x}^{2}  + 4x - 9

3.

(4 {x}^{2}  + 2x - 5) + (6 {x}^{2}  - x - 5) \\ \\ combining \: th e\:l ike \: terms, \: we \: have \\  \\= 4 {x}^{2}  + 6 {x}^{2}  + 2x - x - 5 - 5 \\  \\= 10 {x}^{2}  +x - 10

\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}

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