Advertisements
Advertisements
Question
Find the value of 5x2 – 3x + 2, when x = 2.
Sum
Advertisements
Solution
5x2 – 3x + 2
= 5(2)2 − 3(2) + 2
= 5(4) − 6 + 2
= 20 + 2 − 6
= 16
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
ab + y = ...............
Find the value of `"yx"/"z"`, when x = 8, y = 4 and z = 16
Find the value of `("a+b"-"c")/(2"a")`, when a = 5, b = 7 and c = 2
State true and false:
The value of x + 5 = 6, when x = 1
Simplify:
6a2 + (2a2 − a2) − (a2 − b2)
Simplify:
25y − (5x − 10y + 6x − 3y)
Simplify:
`5"x"^2-(3"x"-overline("x"^2-4))`
Insert the bracket as indicated:
x2 − y2 + z2 = x2 − (..................)
If P = − 12x2 – 10xy + 5y2, Q = 7x2 + 6xy + 2y2, and R = 5x2 + 2xy + 4y2 ; find P – Q + R
Simplify:
`12"x"^2-(7"x"-overline(3"x"^2+15))`
