Additive Identity

Q. Rationalise. 22/(2+√3+√5)

Q.

If a + b = 12 and a² + b² = 60, the value of a³ + b³ is:

1. 200

2. 216

3. 310

4. 150

Q. Add 5√2 + 3√3 and 2√2 – 5√3.

Q. 95. If expression x2- mx + 1 is positive, then2(2) m2-4 0(4) m 2(1) m2-4<0(3) m2-4> 0

Q. 39. x+1/x=4 then x5+1/x5=

Q. a½+b½-c½=0 then find the value of (a+b-c)

Q. 27:51::83:x find the value of x

Q.

Question 69
In the following question, state whether the given statement is true (T) or false (F).
There is a whole number which when added to a whole number, gives the number itself.

Q.

Define additive identity and additive inverse. Give an example.
[2 MARKS]

Q. The simplest for of $1.\overline{6}$ is
(a) $\frac{833}{500}$
(b) $\frac{8}{5}$
(c) $\frac{5}{3}$
(d) none of these

Q. 45. If a+b+c =0 then find the value of a+b+c