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Haliddalimbang07go
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Assessment Evaluate the following by substitution. Write your answer in a separate sheet of paper. 1. X-12, if x=3 2. 4x+8, if x=2 3. x2+8x-12, if x= 4 4. 4x2-10x-16, if x= -3 5. 3x3-10, if x= -3​

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UK2019go

✏️EVALUATION

Assessment: Evaluate the following by substitution. Write your answers on a Observations Paper.

[tex]1. \: \sf x - 12 = 3 - 12 = \boxed{ \tt{ \green{ - 9 }}}[/tex]

[tex]2. \: \sf 4x + 8 = 4(2) + 8 = 8 + 8 = \boxed{ \tt{ \green{ 16}}}[/tex]

[tex]3. \: \sf {x}^{2} + 8x - 12[/tex]

  • [tex] \sf {4}^{2} + 8(4) - 12[/tex]

  • [tex] \sf 16 + 8(4) - 12[/tex]

  • [tex] \sf 16 + 32 - 12[/tex]

  • [tex] \sf \boxed{ \tt{ \green{36}}}[/tex]

[tex]4. \: \sf 4{x}^{2} - 10x - 16[/tex]

  • [tex]\sf 4{( - 3)}^{2} - 10( - 3) - 16[/tex]

  • [tex]\sf 4{( 9)} - 10( - 3) - 16[/tex]

  • [tex]\sf 4{( 9)} - ( - 30) - 16[/tex]

  • [tex]\sf 36 - ( - 30) - 16[/tex]

  • [tex]\sf 36 + 30 - 16[/tex]

  • [tex] \sf \boxed{ \tt{ \green{50}}}[/tex]

[tex]5. \: \sf 3{x}^{3} - 10[/tex]

  • [tex]\sf 3{( - 3)}^{3} - 10[/tex]

  • [tex]\sf 3{(-27)} - 10[/tex]

  • [tex]\sf - 81 - 10[/tex]

  • [tex] \sf \boxed{ \tt{ \green{-91}}}[/tex]

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