339,076 views
25 votes
25 votes
Evaluate the expression below when x is 4

3x^2 +5 =​

User David Lemphers
by
2.9k points

2 Answers

10 votes
10 votes
3x^2+5
3(4)^2+5
*note*
(4)^2= 4•4=16
3(16)+5
48+5= 53
User Etamar Laron
by
3.1k points
21 votes
21 votes

Answer:


\fbox {53}

Explanation:

⇒ 3x² + 5

Substitute x = 4 :

⇒ 3(4)² + 5

⇒ 3(16) + 5

⇒ 48 + 5

53

User Alan Souza
by
3.5k points