Question

evaluate the expression below when x is 4

3x^2 +5 =​

Answer 1

Answer:

$\fbox {53}$

Step-by-step explanation:

⇒ 3x² + 5

Substitute x = 4 :

⇒ 3(4)² + 5

⇒ 3(16) + 5

⇒ 48 + 5

⇒ 53

Answer 2

3x^2+5
3(4)^2+5
*note*
(4)^2= 4•4=16
3(16)+5
48+5= 53