Question

. Simplify 7x2
(3x – 9) + 3(x-1) and find its values for x = -1 and x = 6

Answer 1

Answer:

on putting x = -1 in (3x - 9) + 3(x - 1)

(3×(-1) - 9) + 3(-1 - 1)

(-3 - 9) - 3 - 3

- 3 - 9 - 3 - 3

= -18

on putting x = 6 in the above equation

(3×6 - 9) + 3(6 - 1)

18 -9 + 18 - 3

24