IDENTITY–1 (a+b)2=a2+2ab+b2

IDENTITY-2 (a−b)2=a2−2ab+b2

IDENTITY-3 a2−b2= (a+b )(a−b)

IDENTITY-4 ( x+a ) ( x+b )=x2+(a+b ) x+ab

IDENTITY-5 (x+ y+x)2=x2+ y2+z2+2 xy+2 yz+2 zx

IDENTITY-6 (x+ y )3=x3+ y3+3 x2 y+3 x y2

IDENTITY-7 (x− y )3=x3−3 x2 y+3 x y2− y3

IDENTITY-8 x3+ y3+ z3−3xyz=( x+ y+ z )¿

IDENTITY-9 a3+b3=(a+b )(a2−ab+b2)

IDENTITY-10 a3−b3=(a−b )(a2+ab+b2)

Speed=distancetime

velocity=displacementtime

Average speed= totaldistance coveredtotal time taken

Average velocity=v+u2

Acceleration a= change∈velocitytime = final velocity−initial velocity

time = v−ut

VELOCITY TIME EQUATION

Slope = y2− y1x2−x1

a= v−ut

v=u+at

POSITION TIME EQUATION

s=ut+ 12(v−u) t

s=ut+ 12 a t2

POSITION VELOCITY EQUATION

s=12

( v+u ) t

s=( v−u )(v+u)

2a

v2=u2+2as

2as=v2−u2