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kaheart [24]
3 years ago
5

Subtract 3x^2 + 8x from -9x^2 +3x -8

Mathematics
1 answer:
Marianna [84]3 years ago
7 0

Answer:

\boxed{ \bold{  \huge  {\boxed{ \sf{ - 12 {x}^{2}  - 5x - 8}}}}}

Step by step explanation

\sf{ - 9 {x}^{2}  + 3x - 8 - (3 {x}^{2}  + 8x)}

When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression

\dashrightarrow{ \sf{ - 9 {x}^{2}  + 3x - 8 - 3 {x}^{2}  - 8x}}

Collect like terms

\dashrightarrow{ \sf{ - 9 {x}^{2}  - 3 {x}^{2}  + 3x - 8x - 8}}

\dashrightarrow{ \sf{ - 12 {x}^{2}  - 5x - 8}}

Hope I helped!

Best regards!

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