- x-2+y-2=……..
A.(x+y)-2 B. (xy)-2 C. (x2+y2)(xy)-2 D.x2+y2 E. (xy)(x+y)-2
20.If x4 =10, what is x6?
A.1010 B.100 C.100 10 D.1000 E.100010
21.(0.1)3+ 0.000004 =……….
A.0.3 B.0.2001 C.0.1002 D.0.021 E.0.003 - If x=5 + 2 and y= 5 - 2 ,then x2+y3=……….
A.1 B.9 C.18 D.45 E.85 - 5x+5x+1=150. then x=………..
A.2 B.1 C.0 D.-1 E. -2 - If 7+3x = x7+3 , then x=……….
A. 2 B.-2 C.4 D.-4 E. 2 or -2 - If √2 =1.41 and √3 =1.73 , then the value of 8 +12 =……..
A. 2.82 B.3.14 C.4.28 D.6.28 E.3.46 - 23x= 18 , then x=……..
A.-2 B.-3 C.2 D.-6 E.6 - x+yx-1+ y-1 =………..
A. xy B. x+y C. x-y D. (x+y)2 E.x+yxy
28.If (√5 -1)√k =√2 , then k=……….
A.3-54 B. 3+54 C.5+2 D.√5 +6 E.2√5 + 6 - 3n-2 × 92-n32-n = …………
30.If xa(xa-1)a(xa)1-a=xk , then k=………
A. 2a+1 B.a+a2 C.3a D.3a+1 E.a3+a - If 16x=4 and 5x+y=625 , then y=……….
A.2 B.5 C.252 D. 72 E.1 - If 72x.492x-1, then y=……….
A.-1 B. -13 C.13 D.1 E.3 - 3+13-1 - 3-13 =………
A. 0 B. 12 C. 3 D.23 E. 12+23 - If x + 1x =1+3 , then x2 +1x2 =………….
A. 1 B. 4 C. 1+23 D.2+23 E. 3+23 - If 4×2x-4x=0, then x=……….
A.-2 B.-1 C.0 D.1 E.3 - 11+2 + 12+3 +13+ 4 +14+ 5 =……..
A.11-5 B.16-1 C. 1+5 D.1-5 E. -1+5 - Simplify aa+b - ba-b
A.1a- b B. a-2ab-ba- b C.a-2ab-ba-b D. a+2ab-ba-b E. a+ba-b
38.18+623 =………
A. 332 B. 2 C. 42 D. 22 E.3
Read next
From @eizazanaing