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Chapter 10: Q 282 (page 1236)

Solve the quadratic equation by quadratic formula .9d2-12d=-4

Short Answer

Expert verified

The required result isd=23

Step by step solution

01

 Given Information 

The given equation is9d2-12d=-4

02

Write the quadratic equation in standard form and identify .a ,b,c

The quadratic equation in standard form

9d2-12d+4=0

So ,

a=9,b=-12,c=4

03

Substitute the values in quadratic formula. 

x=-b卤b2-4ac2ad=--12卤-122-49429d=12卤144-14418d=12卤018d=1218d=23

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