Exercise 7.5

Q3.

Solution:

3x -1 = A(x-2)(x-3) + B(x-1)(x-3) + C(x-1)(x-2) ................... (i)

Substituting x =1, 2, and 3 respectively in equation (i), we obtain A =1, B = -5 and C= 4.

Q4.

Solution:

Q5.

Solution:

2x = A(x + 2) + B(x +1)

Substituting x = −1 and −2 in equation (1), we obtain
A = −2 and B = 4

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