Question

Value of expression 3p ( 4 p - 5 ) for p = -1 is ..........
(a) 27
(b) - 27
(c) 3
(d) - 3


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Answer 1

Answer:

(D) bbehdndnejddjej- 3

Answer 2

$3p(p - 5) \\ \\ \implies12{p}^{2} - 15p \\ \\ substituting(p = - 1) \\ \\ \implies12( { - 1}^{2} ) - 15( -1 ) \\ \\ \implies12 + 15 = 27$

so, option a)27 is the correct option