Question

solve the quadratic equation 9y²- 100 = 0 by factorization method​

Answer 1

Answer:

y = -10/3, 10/3

Explanation:

9y²- 100 = 0

=> (3y)² - 10² = 0

=> (3y+10)(3y-10) = 0   [∵ using a²-b² = (a+b)(a-b)]

=> y = -10/3, 10/3