Question

(ICSE)
8. What term should be added to each of the
following expressions to make it a perfect
square?
(i) 4a^2 + 28a
Please tell fast friends with full method otherwise it will be reported.
First and correct will be marked as brainliest ​

Answer 1

(m + n)² = m² + 2mn + n² and (m - n)² = m² - 2mn + n².

1. 4a² = (2a)²

28a = 2(2a)7

∴ The answer is 7² = 49.

4a² + 28a + 49 = (2a + 7)².

hope this helps