Question

2x²+9x+10=0

2x²+x√7-7=0​

Answer 1

⟹x=

2(2)

−(−9)±

(−9)

2

−4(2)(7)

​

​

⟹x=

4

9±

81−56

​

​

 

⟹x=

4

9±

25

​

​

 

⟹x=

4

9±5

​

 

⟹x=

4

9+5

​

x=

4

9−5

​

 

⟹x=1,

2

7

​

Answer 2

Răspuns:

X=-5/2.

X=-2.

2x²+xradical7 -7=0

=

X=-5/2

X=-2

X=radical7/2

X=-5

=0