Answer:
x = 15m
Step-by-step explanation:
The second triangle (large) is 3 times greater than the first triangle (small).
6 x 3 = 18 4 x 3 = 12 5 x 3 = x
5 x 3 is 15, so x is 15m
4x = -36 Subtract 10 from both sides
x = -9 Divide by 4 on both sides
Answer:
x = 0 or 1 or -2
Step-by-step explanation:

x(x^3-3x+2)=0
x(x-1)^2 * (x+2)0
so x = 0 or 1 or -2
there is no imaginary solutions