Advertisements
Advertisements
प्रश्न
Simplify the expression and find the value if x is equal to 2:
3 (x + 2) + 5x - 7
बेरीज
Advertisements
उत्तर
3 (x + 2) + 5x - 7
= 3x + 6 + 5x - 7
= 3x + 5x + 6 - 7
= 8x - 1
Putting x = 2 we get,
= (8 × 2) - 1
= 16 - 1
= 15
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Algebraic Expressions - EXERCISE 10.2 [पृष्ठ १६८]
APPEARS IN
संबंधित प्रश्न
When a = 0, b = −1, find the value of the given expression:
2a + 2b
If x = 4, evaluate:
x2 – 2x
If x = 4, evaluate:
`"x"^2/2`
If x = 4, evaluate:
12x + 7
If a = – 10, evaluate:
a2
If x = 5 and y = 4, evaluate:
3y2
If y = 5 and z = 2, evaluate:
9y2z
If m = − 8, evaluate:
2m + 21
If y = − 8, evaluate:
y2 + 12y
Evaluate \[a^2+2ab+b^2\] when a = 3 and b = 2.
