volume_mute

Expand (x + 3)(x + 2)

publish date: 2020/11/21 05:38:00 GMT+11

volume_mute

a. 2x2 + 5x + 3

b. x2 + 5x + 6

d. 4x2 + 6x + 6

c. 4x2 + x + 6

a
b
c
d

Correct Answer

b

Explanation

  1. Write the expression.
    • (x + 3)(x + 2)
  2. Multiply the first terms in each bracket, then the outer terms, the inner terms and finally the last terms.
    • = x × x, x × 2, x × 3, 3 × 2
  3. Collect like terms. = x2 + 2x + 3x + 6
    • = x2 + 5x + 6

Reference

Maths_Quest_10+10A_VC_Revised_Edition_Book

Quizzes you can take where this question appears