Question

anyone explain all of this please​

Answer 1

9)D

10)b

11)a

12)c

13)a

Step-by-step explanation:

question no 9,10,12 are basic concepts in the chapter quadratic equations so they dont need explanation

11)m²+3m-m-1=0 (factorization )

(m+3)(m-1)=0

m+3=0 or m-1=0

m= -3 or m=1

therefore answer is option a

13)the degree in equation in option a is 2 therefore answer is option a