ICSE Class 8: Addition and Subtraction of Polynomials Videos | Addition and Subtraction of Algebraic Expressions

• what must be added to x?- x³+x²+x+3 to obtain x?+x²-1
• Add: 
• 8xy + 12xy  
• The sum of two rational numbers is-19/60 if one of the numbers is -7/12 find thenumber
• Find the expression to be subtracted from (4x+6xy-2y) to make it(-12x-3xy+4y)    

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