Question

find the value of the following expression for x= -2 (a)x³-2x (b)3x3+4x2-8x(c)5x²-6​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

here x=-2

first equ, x^3 -2x = (-2)^3 -2×(-2)=

by calculating. = -12+4= -8

second equ, 3×3 +4×2 -8×(-2)

by calculating = 9+8+16= 33

third is = 5×(-2)^2-6

by calculating. = 20-6= 14

I think this is right