Simplify the following
`(a-b) (c-d)`

Simplify the following 3.6a^(3)b^(2)c div 1.2 ab^(2)c^(3)

Simplify the following fractions: (48a+12b)/(a+b)

Simplify the following expressions by combining like terms. (d^(8))/(d^(7))

Match the following (a) (b) (c ) (d)

Simplify each of the following: tan^(-1)((a+b x)/(b-a x))

Simplify the following expressions : 2/3 (2a-b) +1/2 (a-2b+c) - 1/3 c

Identify the following A,B,C and D in given figure:

Indentify the following figures (A,B,C and D) .

If a,b,c ,d are four distinct numbers such that : a + c = 2d and b + d =2c , Which of the following is the correct expression for the average of the four numbers ?

Fill in the blanks in the following so that each of the following statements is true. (i) Sides opposite to equal angles of a triangle are ....... (ii) Angle opposite to equal sides of a triangle are ....... (iii) In an equilateral triangle all angles are ....... (iv) In a A B C if /_A=/_C , then A B=\ ..... (v) If altitudes C E\ a n d\ B F of a triangle A B C are equal, then A B= ........ (vi) In an isosceles triangle A B C with A B=A C , if B D\ a n d\ C E are its altitudes, then B D is .......... C E . (vii) In right triangles A B C\ a n d\ D E F , if hypotenuse A B=E F and side A C=D E , then A B C\ ~= ....