Ws Nd1 Transposition _3_ Quadratic And Square Roots

Transposition (3) More Transposition of Simple Formulae EXERCISE 1 1. Transpose for x (i.e. solve for x): (a)

x =4

(b) 3 x = 5

Ans:

Ans: 16

(c) 3 x 6 = 9

25 9

(d) 5 x 3 = x + 7

Ans: 25

Ans: 6.25

2. Transpose for x (i.e. solve for x): (a) 2 x + 5 = 20

(b) 3 x 1 + 5 = 11

Ans: x = 95

(c)

1+ 2 x 2

Ans: x = 5

(d) 2 3x + 16 + 3x = 13

1+ 2 x =1 3

Ans: x = 6.25

Ans: x = 3

2. Transpose for x (i.e. solve for x): (a) 2 x 2 = 8

(b) 3 x 2 5 = 1

Ans: x = ±2 2

(c) ( x + 2) 2 = 9

Ans: x = ±1.414

(d) 4( x 1) 2 =

9 4

Ans:

Ans: 1, 5

(c)

8 9 x + = x 2x 2

(d)

10 x = x 2

1 7 , 4 4

29 2x

Ans: x = ±5

Ans: x = ±7

2. Transpose for x (i.e. solve for x): (a) 3 x 2 = 3

(b) x 2

Ans: x = undetermined

(c)

x = 20

Ans: x = 4, 5

x 5 = 2 x+3

Ans: x = 2, 5