Integers Questions and Answers - Form 1 Topical Mathematics

Questions

1. 3x – 1 > -4
   2x + 1≤ 7
2. Find the value of x
   2^(x-3) x 8^(x+2) = 128

Answers

1. X > -1
   X ≥ 3
2. 2^x ÷ 2³ x 8^x x 8² = 128
   2^x ÷ 2³ x 2^3x x 8² = 128
   Let 2^x be y
   ^y/₈ x y³ x 64 = 128
   ^8y/₈ = ¹²⁸/₈
   y⁴ = 16
   y⁴ = 24
   y = 2