Advertisements
Advertisements
प्रश्न
If x = 2 and y = 3, then find the value of the following expressions
4y – x
Advertisements
उत्तर
Given: x = 2, y = 3
4y – x = 4(3) – 2
= 12 – 2
= 10
APPEARS IN
संबंधित प्रश्न
Get the algebraic expression in the following case using variables, constants and arithmetic operations.
One-half of the sum of numbers x and y.
Factorize: x3 + x - 3x2 - 3
Factorize: `a^2 x^2 + (ax^2 + 1)x + a`
Factorize `x^2 - sqrt3x - 6`
Factorize `x^2 + 2sqrt3x - 24`
Factorize the following expressions:
10x4y – 10xy4
Factorize the following expressions:
x3y3 + 1
Write the value of 483 − 303 − 183.
Evaluate: (a2 + b2 + c2 - ab - bc - ca)(a + b + c)
Multiply: (2x + 5y + 6)(3x + y - 8)
Multiply: (3x - 5y + 2)(5x - 4y - 3)
Divide: 10a3 - 15a2b by - 5a2
Divide:
n2 − 2n + 1 by n − 1
Divide: 10x3y - 9xy2 - 4x2y2 by xy
Express the following as an algebraic expression:
The product of 12, x, y and z minus the product of 5, m and n.
The constant term of the expression 2y – 6 is _________
Give an algebraic equation for the following statement:
“The difference between the area and perimeter of a rectangle is 20”.
The rate of planting the grass is ₹ x per square metre. Find the cost of planting the grass on a triangular lawn whose base is y metres and height is z metres.
Match Column I with Column II in the following:
| Column I | Column II |
| 1. The difference of 3 and a number squared | (a) 4 – 2x |
| 2. 5 less than twice a number squared | (b) n2 – 3 |
| 3. Five minus twice the square of a number | (c) 2n2 – 5 |
| 4. Four minus a number multiplied by 2 | (d) 5 – 2n2 |
| 5. Seven times the sum of a number and 1 | (e) 3 – n2 |
| 6. A number squared plus 6 | (f) 2(n + 6) |
| 7. 2 times the sum of a number and 6 | (g) 7(n + 1) |
| 8. Three less than the square of a number | (h) n2 + 6 |
