Advertisements
Advertisements
Question
If m = 2, find the value of 3m2 − 2m − 7.
Sum
Advertisements
Solution
3m2 − 2m − 7 Putting m = 2 in the given equation
= 3 × 22 - 2 × 2 - 7
= 3 × 4 - 4 - 7
= 12 - 4 - 7
= 1
shaalaa.com
Is there an error in this question or solution?
Chapter 10: Algebraic Expressions - EXERCISE 10.2 [Page 168]
APPEARS IN
RELATED QUESTIONS
Find the value of the following expression, when x = -1:
x2 + 2x + 1
If x = 4, evaluate:
`"x"^2/2`
If x = 4, evaluate:
5x2 + 4x
If a = – 10, evaluate:
a3
If x = 5 and y = 4, evaluate:
8xy
If x = − 6, evaluate:
`"x"^2/2`
If x = 2 and y = − 4, evaluate:
(5y)2
If m = 9 and n = − 2, evaluate (2n)3
If x = − 5 and y = − 8, evaluate:
2xy2
The temperature in the Fahrenheit scale is represented by F and the temperature in the Celsius scale is represented by C. If F = `9/5` × C + 32, find F when C = 40.
