Which two equations would be most appropriately solved by using the quadratic formula? select each correct answer. (x+8)(x+9)=0 5x2+7x=15 0.25x2+0.8x−8=0 (x−3)2=36

Step-by-step explanation:

Given equations :

Solution:

A)  

It is not appropriately solved by using the quadratic formula because the solution is direct

The solution is x=-8 and x=-9

B)  

⇒

 It is appropriately solved by using the quadratic formula because the solution is not direct

C)

It is appropriately solved by using the quadratic formula because the solution is not direct

D)

⇒

⇒

⇒

⇒

It is not appropriately solved by using the quadratic formula because the solution is direct.

Hence Option B and C are the two equations would be most appropriately solved by using the quadratic formula.

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step-by-step explanation: