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ADD the following

1. 12a²b² , -7a²b² and 9a²b²
2. 4x²y , -3xy² , -5xy² , 5x²y

Subtract the following

1. -10abc from 10abc
2. -5y from y²

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Respuesta :

RubySun

1. 1. 12a²b² , -7a²b² and 9a²b²

anwer ;

  • 12a²b² - 7a²b² + 9a²b² = ( 12 - 7 + 9 )a²b²
  • = 14 a²b²

2. 4x²y , -3xy² , -5xy² , 5x²y

answer ;

  • ( 4x²y + 5x²y ) + (- 3xy² - 5xy² ) = (4 + 5)x²y + ( -3 - 5) xy²
  • = 9x²y - 8 xy²

3. -10abc from 10abc

answer ;

  • 10abc - ( -10abc ) = 10abc + 10abc
  • = (10 + 10) abc
  • 20abc

4. -5y from y²

answer ;

  • y² - ( -5y² ) = y² + 5y²
  • = y² ( 1 + 5 ) = 6y²

I hope my answer helps you

#1

[tex]\\ \sf\longmapsto 12a^2b^2-7a^2b^2+9a^2b^2[/tex]

[tex]\\ \sf\longmapsto (12-7+9)a^2b^2[/tex]

[tex]\\ \sf\longmapsto 14a^2b^2[/tex]

#2

[tex]\\ \sf\longmapsto 4x^2y-3xy^2-5xy^2+5x^2y[/tex]

[tex]\\ \sf\longmapsto 9x^2y-8xy^2[/tex]

#3

[tex]\\ \sf\longmapsto 10abc-(-10abc)=(10+10)abc[/tex]

[tex]\\ \sf\longmapsto 20abc[/tex]

#4

[tex]\\ \sf\longmapsto y^2-(-5y)[/tex]

[tex]\\ \sf\longmapsto y^2+5y[/tex]