Question

Find a such that 9x2 + 2x + a is (a )perfect square.

please answer to be the brainliest​

Answer 1

Answer:

a = 10

Step-by-step explanation:

And to Solve this equation we write it like this

A= 9 multiplied by 2 + 2x + A

2a = 18 + 2x

So, Lets keep the "x" aside and see

2a = 18 + 2

    = 20

a = 20 upon 2 or (20/2) = 10

a= 10

So now there's a question whats "x"

   = 18 + 2x + 10

   = 28 + 2x

x = 28 +2

x = 30

Now, solving the equation:

9 multiplied by 2 added to 2 and then multiplied with 30 and again added to 10

  = 18 + 2 * 30 + 10

  = 60 + 10 + 18

  = 70 + 18

  = 88

Voila!! you've got it

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