Question

8. What must be added to (4x² + 20x + 16) so that it becomes a perfect square? please give full solution
​

Answer 1

Answer:

so 9 must be added to get a perfect square.!

Step-by-step explanation:

hope it helps you please mark it as brainliest

Answer 2

Answer:

9

GIVEN,

$( {4x}^{2} + \: 20x \: + 16)$

SOLUTION :

$( {2x})^{2} \: + 2 \: \times 2x \times 5 \: + 25 = (2x + 5) ^{2}$

SO,

25 - 16 = 9

THEREFORE 9 IS THE NUMBER SHOULD BE ADDED TO GET A PREFECT SQUARE.