Question

what should be added to 81x2+270x to Make a perfect square​

Answer 1

Answer:

.....................

Step-by-step explanation:

Answer 2

Answer:

81x2+270x+a2=(9x)²+2*9x*a+(a)2

270x=18x*a

a=15,

so 225 is added to make a perfect square

81x2+270x+225=(9x+15)2