Question

find a such that 9x^2+2x+a is a perfect square?​

Answer 1

Answer:

a = 1

Step-by-step explanation:

Given that,

$9 {x}^{2} + 2x + a$

For whole square,

${(3x)}^{2} + 2.x.1 + {(1)}^{2}$

so, a = 1