Advertisements
Advertisements
Question
Simplify this expression and find its value if x = 3, a = −1, b = −2.
3a + 5 - 8a + 1
Sum
Solution
3a + 5 - 8a + 1 on putting a = -1 in the given equation
= 3a - 8a + 5 + 1
= -5a + 6
= -5 × (-1) + 6
= 5 + 6
= 11
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find the value of the following expression, when x = -1:
-x + 2
If a = 2, b = −2, find the value of a2 + b2.
If x = 4, evaluate:
`"x"^2/2`
If x = 4, evaluate:
5x2 + 4x
If x = 5 and y = 4, evaluate:
3y2
If m = − 8, evaluate:
m2 + 9m
If y = − 8, evaluate:
y2 + 12y
If x = 2 and y = − 4, evaluate:
5x2y
If m = 9 and n = − 2, evaluate (2n)3
Find T, if T = 2a – b, a = 7 and b = 3.
