Question

Simplify 3x ( 4x - 5) + 12 x + 3 and find its value for x = 3​

Answer 1

Answer:

(a) x = 3

3x(4x - 5) + 3

3 x 3(4 x 3 - 5) + 3 [put the value of x= 3]

9(12-5)+ 3

9 7 + 3

- 63 + 3

- 66

Now,

(b) x = }

3x(4x - 5) + 3

- 3 x ; (4 x; - 5) + 3 [pu the value of x = 2

(2 - 5) + 3

- (-3) + 3

+ 3

-9+6 2

BloomingBud. -3/2

Answer 2

Answer:

3(3) (4{3}-5) + 12(3) + 3

9 [12-5] +36+3

9[7]+39

63+39

=102