Answer:
x^2 + 2x = 1 = - 1
Step-by-step explanation:
x^2 + 2x + 3 = 1
x^2 + 2x + 3 - 2 = 1 - 2
x^2 + 2x + 1 = - 1
Hope it cleared your doubt.
Answer:
..-9, -27, -81....
Step-by-step explanation:
Each term after the first is found by multiplying the previous term by 3.
So its ..-9, -27, -81......