Question

Sendo A=-2x+5, B=4-5x e C=4x-1, determine:C-3A×2B

Answer 1

A = 2x+5
A x=5-2
A = 3

B 4-5x
B x= 5+4
B = 9

C 4x-1
C x= 1-4
C x=-3

(-3)-3.(3).2.(9)
(-3)-(-9).18
(-3)+9.18
(-3)+162
159