Question

4. (a) Simplify 3x (4x – 5) + 3 and find its values for (i) x = 3 (ii) x =
2
(b) Simplify a(a² + a +1) + 5 and find its value for (i) a= 0, (ii) a = 1
(iii) a=-1.​

Answer 1

please put me as brainlianist

Answer 2

:

Mark Me As Brainliest And Thank Me If The Answer Is Useful.

-- :

3x(4x−5)+3=12x^2−15x+3

x=3 gives the value 12(9)−15×3+3

                             =108−45+3

                              =66

x=1/2 gives the value 12(1/4)−15×(1/2)+3

                             =3−7.5+3

                              = - 3/2