Question

find the discriminant of the equation 9x²-16=0​

Answer 1

Answer:

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Answer 2

Answer:

9x2 9 x 2 as (3x)2 ( 3 x ) 2 . Rewrite 16 as 42 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 - b 2 = ( a + b ) ( a - b ) where a=3x a = 3 x and b=4 .