`(a-b)+2(a+b)+1`

Resolve into factors : (a+b)^2 - 2(a+b) +1

If a=2b ,\ then a : b= (a) 2:1 (b) 1:2 (c) 3:4 (d) 4:3

If a=2b, then a:b=2:1 (b) 1:2( c) 3:4 (d) 4:3

Prove |[1+a^2-b^2, 2 a b, -2 b],[ 2 a b, 1-a^2+b^2, 2 a],[ 2 b, -2 a, 1-a^2-b^2]|=(1+a^2+b^2)^3

If sintheta+costheta=a and (sintheta+costheta)/(sinthetacostheta)=b , then (a) b=(2a)/(a^2-1) (b) a=(2b)/(b^2-1) (c) ab=b^2-1 (d) a+b=1

The common difference of the A.P. 1/(2b), (1-6b)/(2b), (1-2b)/(2b) is………………

If a o+ b = a^3 + b^2 + 1 a © b = (a - b)^2 + 1 a ** b = a^3 - b^2 + 1 The value of P = (((1 o+ 2) ** 2) © 1) is :

If a o+ b = a^3 + b^2 + 1 a © b = (a - b)^2 + 1 a ** b = a^3 - b^2 + 1 The value of P = (((2 o+ 2) © 2) is :

If a o+ b = a^3 + b^2 + 1 a © b = (a - b)^2 + 1 a ** b = a^3 - b^2 + 1 If P = (2 o+ 3)© (3 ** 5) , then the value of P is :

sin^(-1) ""(2a)/(1+a^(2))-cos^(-1) ""(1-b^(2))/(1+b^(2))=2tan ^(-1) ""(a-b)/(1+ab)