Wednesday, 24 April 2013

7. Find values of x, if


7. Find values of x, if

(i)
2(1)  - 5(4)      = 2x(x) – 6(4)
2     -  20          = 2x2 – 24
- 18           = 2x2 – 24
- 18 + 24   = 2x2
6          = 2x2
3          = x2

(ii)
2 (5) – 3(4)     = x(5) – 2x(3)
10 – 12           = 5x – 6x
-2         = - x
x          = 2

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