Practice the questions given in the worksheet on cube of the sum of two binomials. We know, cube of a binomial means multiplying a binomial with itself three times.

See the formulas to expand the cube of the sum of two binomials.

**1.
Expand each of the following:**

(i) (x + 3y)

(ii) (px + qy)

(iii) (x

(iv) (-x + 2y)

(v) (a + 8y)

(vi) (1/4 p + 3/4 q)

(i) (105)

(ii) (1002)

(iii) (303)

(iv) (10.1)

(v) (9.04)

(ii) If x + 1/x = 11, find the value of x

(ii) Find the value of 8x

Answers for the worksheet on cube of the sum of two binomials are given below to check the exact answers of the above expansion.

**Answers:**

(ii) p

(iii) x

(iv) -x

(v) a

(vi) 1/64 p

**2.** (i) 1157625

(ii) 1006012008

(iii) 27818127

(iv) 1030.301

(v) 738.763264

3. (i) 322 (ii) 1298

**4.** (i) -208 (ii) 288

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