Q.5. `(a-1)(a+1)(a^2+1)` is equal to
(A) `a^2-1` (B) `a^2+1` (C) `a^4-1` (D) `a^4+1`

(2^(-1)+3^(-1)+5^(-1))^(0) is equal to (a) 2 (b) 3 (c) 5 (d) 1

5 tan^2 A -5sec^2 A+1 is equal to (a) 6 (b) -5 (c) 1 (d) -4

x^((x-1)- 1/2 (x-1)^2+1/3((x-1)^3).- 1/4((x-1)^4).+…….. is equal to (A) 2logx (B) logx (C) x^2 (D) none of these

If a = - 2 , b = -1 , then ( a^b - b^a ) is equal to ( a ) -1 ( b ) 0.5 ( c ) -2 ( d ) -1.5

1+2-:{1+2-:(1+(1)/(3))} is equal to (a) 1(4)/(5)( b) 2(1)/(4)( c) 4(1)/(5)( d )5(1)/(4)

Evaluate : ( 1/2 - 1/3 ) + ( 1/3 - 1/4 ) + ( 1/4 + 1/2 ) is equal to ( a ) 0 ( b ) 1/4 ( c ) 1/2   ( d ) 1

((-1)/5)^5x\ ((-1)/2)^3 is equal to ((-1)/2)^8 (b) -\ (1/2)^8 (c) (1/4)^8 (d) (-1/2)^(15)

If ((a^(2)+1)^(2))/(2a-i)=x=iy, then x^(2)+y^(2) is equal to ((a^(2)+1)^(4))/(4a^(2)+1) b.((a+1)^(2))/(4a^(2)+1) c.((a^(2)-1)^(2))/((4a^(2)-1)^(2)) d.none of these

(sqrt(2)+(1)/(sqrt(2)))^(2) is equal to 2(1)/(2) (b) 3(1)/(2)(c)4(1)/(2) (d) 5(1)/(2)

int_(-1)^1|1-x|dx is equal to -2 b. 2 c. 0 d. 4