4) Solve the following quadratic equation.
1/4-p-1/2+p=1/4
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we have to solve the quadratic equation,
1/(4 - p) - 1/(2 + p) = 1/4
solution : 1/(4 - p) - 1/(2 + p) = 1/4
⇒[(2 + p) - (4 - p)]/(4 - p)(2 + p) = 1/4
⇒(2p - 2)/(4 - p)(2 + p) = 1/4
⇒4(2p - 2) = (4 - p)(2 + p)
⇒8p - 8 = 8 + 4p - 2p - p²
⇒8p - 8 = 8 + 2p - p²
⇒p² + 6p - 16 = 0
⇒p² + 8p - 2p - 16 = 0
⇒p(p + 8) - 2(p + 8) = 0
⇒(p - 2)(p + 8) = 0
⇒p = 2, -8
Therefore the value of p is 2 and -8.
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