Question

p(m)=m2-3m-1,find the value of p(1)andp(-1)

Answer 1

Hey !!



P ( m ) = m² - 3m - 1


P (1) = (1)² - 3 × 1 - 1 = 1 - 3 - 1 = -3


P (-1) = (-1)² - 3 × -1 - 1 = 1 + 3 - 1 = 3.

Answer 2

$p(m) = {m}^{2} - 3m - 1 \\ p(1) = {1}^{2} - 3(1) - 1 \\ \: \: \: \: \: \: \: \: = 1 - 3 - 1 \\ p(1) = - 3 \\ \\ \\ p( - 1) = {( - 1)}^{2} - 3( - 1) - 1 \\ \: \: \: \: \: \: \: \: \: \: \: \: = 1 + 3 - 1 \\ p( - 1) = 3$
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