Given: f(x) = 5x + 1 and g(x) = 3x + 7 Evaluate: (2f - 7g)(-2)
Answers
Answered by
0
hi......
given, f(x) = 5x + 1 and g(x) = 3x + 7
(2f - 7g) (-2) =
2f = 2(5x + 1) = 10x + 2
7g = 7(3x + 7) = 21x + 49
(2f - 7g) = (10x + 2 -21x -49) =
= ( -11x - 47)
(2f - 7g) (-2) = so,here substitue -2 in the place of x
( -11 ( -2) - 47) = 22 -47
= -25
hope this helps.................
Similar questions