Subtract : −2x2y + 3xy2 from 8x2y

Subtract : −2x²y + 3xy²from 8x²y

Sum

8x²y
−2x²y + 3xy²+ −
10x²y − 3xy²

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Combining like Terms

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Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 4.2 | Page 140

Evaluate :

b²y − 9b²y + 2b²y − 5b²y

Add : 3b − 7c + 10, 5c − 2b − 15, 15 + 12c + b

Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd

Add : x³ − x²y + 5xy² + y³, - x³ − 9xy² + y³, 3x²y + 9xy²

Subtract : 3a − 5b + c + 2d from 7a − 3b + c − 2d

Subtract : 6a + 3 from a³ − 3a² + 4a + 1

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

Take away – 3x³ + 4x² – 5x+ 6 from 3x³ – 4x² + 5x – 6

What must be added to x⁴ – x³ + x² + x + 3 to obtain x⁴ + x² – 1 ?

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