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which of the following quadratic equation can be solved by extracting square roots​

Sagot :

Answer:

C

Step-by-step explanation:

4t² - 9 = 0

Since the given is a difference of two squares then,

4t² = (2t)(2t)

-9 = (3)(-3)

This is by extracting the square roots of 4t² and -9.

The solution of the above equation is

4t² - 9 = 0

4t² - 9

= (2t + 3)(2t - 3)

= 2t + 3 = 0; 2t - 3 = 0

= 2t = -3; 2t = 3

= t = ; t =