Addition and Subtraction of like Terms
Trending Questions
Question 5
To find the sum of three numbers 14, 27 and 13, we can have two ways:
(a) We may first add 14 and 27 to get 41 and then add 13 to it to get the total sum 54 or
(b) We may add 27 and 13 to get 40 and then add 14 to get the sum 54. Thus (14 + 27) + 13 = 14 + (27 + 13)
This can be done for any three numbers. This property is known as the associativity of addition of numbers. Express this property which we have already studied in the chapter on whole numbers, in a general way, by using variables a, b, and c.
Question 82 (i)
Subtract
5a2b2c2 from −7a2b2c2
What is the simplified form of the given expression?
x3y+4x2y2+3xy3+7x2y2+3x3+4y2+6xy+7x3y+8y2
x3y+11x2y2+3xy3+3x3+4y2+6xy+8y2
x3y+11x2y2+3xy3+3x3+12y2+6xy+7x3y
8x3y+4x2y2+3xy3+7x2y2+3x3+12y2+6xy
8x3y+11x2y2+3xy3+3x3+12y2+6xy
- 5(x + 3)
- 3(x + 5)
- 3 + 5x
- 5 + 3x
4
6
10
5
5 apples + 13 oranges =
18 oranges
5 apples + 13 oranges
18 apples
18 mangoes
- 20
- 4
- 3
- 5
Write all the two digit number which when added to 27 get reversed
Find the value of x in the equation 5+3=x.
8
2
5
0
Given that x3y and 7x3y are like terms, then the sum of these two terms will be
4x3y
They cannot be added
8x3y
11x3y
- 11x3y
- 8x3y
- 4x3y
- They cannot be added
How does calculus affect us today?
x3y+4x2y2+3xy3+7x2y2+3x3+4y2+6xy+7x3y+8y2
- x3y+11x2y2+3xy3+3x3+4y2+6xy+8y2
- x3y+11x2y2+3xy3+3x3+12y2+6xy+7x3y
- 8x3y+11x2y2+3xy3+3x3+12y2+6xy
- 8x3y+4x2y2+3xy3+7x2y2+3x3+12y2+6xy
(21) −10, +10
- 20
- 4
- 3
- 5
(17) +9, +11
Add: 12x2−12x+4 and 21x2+7x−10
The coefficient of term xy2 in expression 4xy2+x3−x5+2xy2 is _____.
4
2
3
6
- 11x3y
- 8x3y
- 4x3y
- They cannot be added
(2) 4 × 13 + 2 + 40 (value 100)
- 11x + 3
- 2x + 3
- 3 + x
- 11x + 30
Multiply the polynomials:
(i)(2.5a−0.5b) and (4b2−8ab)
(ii)(19)a2+bc−15 and (47)b2+ab+10 [2 MARKS]
- 20
- 4
- 3
- 5
- 4
- 2
- 3
- 6
- x3+4xy+3y2x2+5xy
- x3+9xy+3y2+3x2
- 3x3+9xy+3y2
- None of the above
- 6m - 8n + 10
- 2m - 8n + 10
- 6m - 8n + 5
To find sum of three numbers 14, 27 and 13, we can have two ways:
(a) We may first add 14 and 27 to get 41 and then add 13 to it to get the total sum 54 or
(b) We may add 27 and 13 to get 40 and then add 14 to get the sum 54. Thus, (14 + 27) + 13 = 14 + (27 + 13)
This can be done for any three numbers. This property is known as the associativity of addition of numbers. Express this property which we have already studied in the chapter on whole numbers, in a general way, by using variables a, b and c.
58+38
(11) +27, +23
Add: +37, +22