Question

How to solve this
4x²-225=0

Answer 1

LET US SEE.........

✴️ QUESTION :-

$4 {x}^{2} - 225 = 0$

✴️ SOLUTION :-

$4 {x}^{2} = 225$

${x}^{2} = \frac{225}{4}$

$x = \sqrt{ \frac{225}{4} }$

$x = + \frac{15}{2} \: and \: x = - \frac{15}{2}$

THESE ARE THE REQUIRED VALUES.

HOPE_IT_HELPS_✌✌✌

Answer 2

Step-by-step explanation:

$= {(2x)}^{2} - {(15)}^{2} = 0 \\ z \\ using \: identity \: {x}^{2} - {y}^{2} = \\ (x + y)(x - y) \\ (2x + 15)(2x - 15) = 0 \\ = 2x + 15 = \frac{0}{2x - 15} \\ = 2x + 15 = 0 \\ = 2x = - 15 \\ = x = \frac{ - (15)}{2} \\ = x = - 7.5$