Find the value of the following if x = 3 :
$3 x^{2} + 2 x - 6$

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Solution

$3 x^{2} + 2 x - 6 = 3 (3)^{2} + 2 (3) - 6$
$= 27 + 6 - 6 = 27$

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Find the value of the following if x = 3 :3x2+2x−6

3x2+2x−6=3(3)2+2(3)−6 =27+6−6=27

Find the value of the following if x = 3 :
$3 x^{2} + 2 x - 6$

$3 x^{2} + 2 x - 6 = 3 (3)^{2} + 2 (3) - 6$
$= 27 + 6 - 6 = 27$