Take M2 + M + 4 from −M2 + 3m + 6 and the Result from M2 + M + 1.

Take m² + m + 4 from −m² + 3m + 6 and the result from m² + m + 1.

Sum

− m² + 3m + 6
+ m² + m + 4
− − −
− 2m²+ 2m + 2
A.T.Q. m² + m + 1
− 2m² + 2m + 2
+ − −
3m² − m − 1

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Combining like Terms

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Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 5.2 | Page 140

Evaluate :

b²y − 9b²y + 2b²y − 5b²y

Evaluate :

abx − 15abx − 10abx + 32abx

Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b

Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

Subtract : 4xy² from 3xy²

Subtract : cab − 4cad − cbd from 3abc + 5bcd − cda

Subtract the sum of 5y² + y – 3 and y² – 3y + 7 from 6y² + y – 2.

How much more than 2x² + 4xy + 2y² is 5x² + 10xy – y² ?

If x = 6a + 8b + 9c ; y = 2b – 3a – 6c and z = c – b + 3a ; find :

How much bigger is 5x²y² – 18xy² – 10x²y than –5x² + 6x²y – 7xy?