Question

plsss ans if u know maths plss if u dont know dont ans plssss​

Answer 1

Step-by-step explanation:

7.

1. quadratic
2. cubic
3. quadratic
4. linear.

8.

x+5=0

x = - 5

9.

x+1=0

x= - 1(substitute this in the equation)

(-1)^3+3(-1)^2+3(-1)+1

= -1 +3-3+1

=0

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