Advertisements
Advertisements
Question
If x = 2 and y = 3, then find the value of the following expressions
2x – 3y
Advertisements
Solution
Given: x = 2, y = 3
2x – 3y = 2(2) – 3(3) = 4 – 9
= 4 + (Additive inverse of 9)
= 4 + (– 9)
= – 5
APPEARS IN
RELATED QUESTIONS
Factorize x3 - 2x2 y + 3xy2 - 6y3
Factorize a2 + 4b2 - 4ab - 4c2
Factorize x2 - y2 - 4xz + 4z2
Factorize `21x^2 - 2x + 1/21`
Factorize `9(2a - b)^2 - 4(2a - b) - 13`
Given possible expressions for the length and breadth of the rectangle having 35y2 + 13y – 12 as its area.
Factorize the following expressions:
54x6y + 2x3y4
x3 - 8y3 + 27z3 +18xyz
If x2 + y2 = 29 and xy = 2, find the value of x - y.
The value of \[\frac{(2 . 3 )^3 - 0 . 027}{(2 . 3 )^2 + 0 . 69 + 0 . 09}\]
Evaluate: (3x - 1)(4x3 - 2x2 + 6x - 3)
Multiply: (x - a)(x + 3b)
Multiply: (1 + 6x2 - 4x3)(-1 + 3x - 3x2)
Write in the form of an algebraic expression:
Perimeter (P) of a square is four times its side.
Express the following as an algebraic expression:
The product of 12, x, y and z minus the product of 5, m and n.
Which of the following expressions has the value 37?
If x = 2 and y = 3, then find the value of the following expressions
4y – x
If Rohit has 5xy toffees and Shantanu has 20yx toffees, then Shantanu has ______ more toffees.
A triangle is made up of 2 red sticks and 1 blue sticks 
. The length of a red stick is given by r and that of a blue stick is given by b. Using this information, write an expression for the total length of sticks in the pattern given below:
