Advertisements
Advertisements
प्रश्न
Simplify the expression and find the value if x is equal to 2:
x + 7 + 4 (x - 5)
योग
Advertisements
उत्तर
x + 7 + 4(x - 5)
= x + 7 + 4x - 20
= (1 + 4)x + (7 - 20)
= x + 4x + 7 - 20
= 5x - 13
Putting x = 2 we get,
= 5x - 13
= (5 × 2) - 13
= 10 - 13
= -3
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Find the value of the following expression, when x = −1:
2x - 7
If x = 4, evaluate:
x2 – 2x
If m – 6, evaluate:
(2m)2
If x = 10, evaluate:
6x2 – 25x
If x = 10, evaluate:
`1/50xx"x"^3`
If x = 8 and y = 2, evaluate:
9xy
If x = 5 and y = 4, evaluate:
8xy
If y = 5 and z = 2, evaluate:
(5z)3
If a = − 10, evaluate:
3a – 2
If m = − 8 and n = − 2, evaluate:
12mn
