Question

9x²=25 solve and check the roots of quadratic equation by extracting the square roots​

Answer 1

Answer:

+5/3, -5/3

Step-by-step explanation:

9x^2-25=0

(3x)^2-5^2=0

(3x+5)(3x-5)=0

Either 3x+5=0 so x= -5/3

or 3x-5=0 so x= 5/3

Answer 2

Given : 9x² = 25

To Find :   roots of quadratic equation by extracting the square roots​

Solution:

9x² = 25

Taking Square root both sides

=> 3x = ± 5

=> x =  ± 5/3

or  9x² = 25

=> 9x² - 25  = 0

=> (3x)² - 5² = 0

=> (3x + 5)(3x - 5) = 0

=> x = -5/3 , 5/3

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