Question

a) if the area is 3xcm^2, make an equation and find x ​

Answer 1

Answer:

Step-by-step explanation:

Area=3kcm  

2

(given)

weknowareaofrectangle=

⇒8×(x−5)=3x

⇒8x−4=3x

⇒5x=40

⇒x=8cm

​  

Answer 2

Answer:

ok

Step-by-step explanation:

let's take an polynomial

p(x)=3$x^{2}$+x+1

let p(x)=1

p(1)=3($1^{2}$)+1+1

    =3*1+1+1

   =3+1+1

     =5

hence x=+1,-1