4. Find the zeroes of quadratic polynomial 9x? - 5 ?
Answers
Answered by
3
Answer:
√5 / 3 and - √5 / 3
Step-by-step explanation:
9x² - 5
( 3x )² - ( √5 )²
Using identity x² - y² = ( x + y) ( x - y)
= ( 3x - √5 )( 3x + √5 )
Zeroes :
( 3x - √5 )( 3x + √5 ) = 0
=> 3x - √5 = 0 or 3x + √5 = 0
=> x = √5 / 3 or x = - √5 /3
Therefore √5 / 3 and - √5 / 3 are the zeroes
Similar questions