Stepwise
Start practisingPractise

WAEC 2020 · Paper 1 · Q22

If the binomial expansion of (1+3x)6(1 + 3x)^6 is used to evaluate (0.97)6(0.97)^6, find the value of xx.

Worked solution (try it first)
  1. Match the bracket to the number: 1+3x=0.971 + 3x = 0.97.
  2. Subtract 1: 3x=−0.033x = -0.03.
  3. Divide by 3: x=−0.01x = -0.01, option C.

Report a problem with this question