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

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Subtract 3x^2 + 8x from -9x^2 +3x -8 - id32892387368224, lisnel

BobreyesV20

01.02.2022

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

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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