Question

If (25-4x²) = (5+ax) (5-ax) let's find the positive value of a.​

Answer 1

Answer:

2

Step-by-step explanation:

(25 - 4x²) = (5 + ax) (5 - ax)

25 - 4x² = (5 + ax) (5 - ax)

{Using identity : (a + b)(a - b) = a² - b²}

25 - 4x² = (5)² - (ax)²

25 - 4x² = 25 - a²x²

Comparing,

a² = 4

a √4

a = ±2

∴ Positive value of a = +2