Question

please solvethese question properly in copy plzzzzz. . .
Qno.22

Answer 1

Since, It is given that
(x - 2) & (x - ½)
are factors of the expression
px² + 5x + r ————— (1)
Therefore,
(x - 2)•(x - ½)
→ x² - 0.5x - 2x + 1
→ x² - 2.5x + 1 ————— (2)
Equating (1) & (2),
x² + (– 2.5)x +1 = px² + 5x + r
Since,
5/(– 2.5) = (– 2)
Multiplying and dividing (2) with (– 2), we get,
((–2)x² + 5x + (- 2))/(– 2) = px² + 5x + r
5x = 5x,
p = (– 2)
r = (– 2)
Therefore, p = r,
Hence, Proved.

Answer 2

this is your answer dear